diff --git a/FFUDevelopment/FFU.Common/FFU.Common.Drivers.Microsoft.psm1 b/FFUDevelopment/FFU.Common/FFU.Common.Drivers.Microsoft.psm1
new file mode 100644
index 0000000..2151752
--- /dev/null
+++ b/FFUDevelopment/FFU.Common/FFU.Common.Drivers.Microsoft.psm1
@@ -0,0 +1,591 @@
+<#
+.SYNOPSIS
+    Common Microsoft/Surface driver helpers (cache index, SKU mapping).
+.DESCRIPTION
+    This module contains Microsoft/Surface-specific functions used by the UI and scripts
+    to map Surface driver packs to System SKU values using:
+    - Source A: Surface System SKU reference (Learn)
+    - Source B: Support page model list
+    - Source C: Download Center details (window.__DLCDetails__)
+#>
+
+# --------------------------------------------------------------------------
+# SECTION: Microsoft Surface Driver Index Cache (Sources A/B/C)
+# --------------------------------------------------------------------------
+
+function Get-SurfaceDriverIndexCachePath {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder
+    )
+
+    # Store the cache under Drivers\Microsoft so it travels with the driver content
+    $microsoftDriversFolder = Join-Path -Path $DriversFolder -ChildPath 'Microsoft'
+    if (-not (Test-Path -Path $microsoftDriversFolder -PathType Container)) {
+        New-Item -Path $microsoftDriversFolder -ItemType Directory -Force | Out-Null
+    }
+
+    return (Join-Path -Path $microsoftDriversFolder -ChildPath 'SurfaceDriverIndex.json')
+}
+
+function Import-SurfaceDriverIndexCache {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder
+    )
+
+    $cachePath = Get-SurfaceDriverIndexCachePath -DriversFolder $DriversFolder
+
+    # Surface cache TTL (7 days): treat stale caches as missing so we re-download Sources A/B/C as needed.
+    $cacheTtlDays = 7
+    if (-not (Test-Path -Path $cachePath -PathType Leaf)) {
+        return [pscustomobject]@{
+            ModelIndex            = @()
+            SkuIndex              = @()
+            DownloadCenterDetails = @()
+        }
+    }
+
+    try {
+        $cacheAgeDays = ((Get-Date) - (Get-Item -Path $cachePath -ErrorAction Stop).LastWriteTime).TotalDays
+        if ($cacheAgeDays -ge $cacheTtlDays) {
+            WriteLog "Surface cache: Cache file '$cachePath' is older than $cacheTtlDays days ($([math]::Round($cacheAgeDays, 1)) days). Refreshing."
+            return [pscustomobject]@{
+                ModelIndex            = @()
+                SkuIndex              = @()
+                DownloadCenterDetails = @()
+            }
+        }
+
+        WriteLog "Surface cache: Loading cached SurfaceDriverIndex.json from '$cachePath' (age: $([math]::Round($cacheAgeDays, 1)) days)."
+    }
+    catch {
+        WriteLog "Surface cache: Failed to read cache timestamp for '$cachePath'. Refreshing. Error: $($_.Exception.Message)"
+        return [pscustomobject]@{
+            ModelIndex            = @()
+            SkuIndex              = @()
+            DownloadCenterDetails = @()
+        }
+    }
+
+    try {
+        $cache = Get-Content -Path $cachePath -Raw | ConvertFrom-Json -ErrorAction Stop
+    }
+    catch {
+        WriteLog "Warning: Could not read Surface driver cache '$cachePath'. Creating a new cache. Error: $($_.Exception.Message)"
+        return [pscustomobject]@{
+            ModelIndex            = @()
+            SkuIndex              = @()
+            DownloadCenterDetails = @()
+        }
+    }
+
+    if ($null -eq $cache) {
+        return [pscustomobject]@{
+            ModelIndex            = @()
+            SkuIndex              = @()
+            DownloadCenterDetails = @()
+        }
+    }
+
+    # Ensure expected properties exist (backward compatible with earlier cache shapes)
+    if (-not $cache.PSObject.Properties['ModelIndex']) {
+        $cache | Add-Member -NotePropertyName ModelIndex -NotePropertyValue @()
+    }
+    if (-not $cache.PSObject.Properties['SkuIndex']) {
+        $cache | Add-Member -NotePropertyName SkuIndex -NotePropertyValue @()
+    }
+    if (-not $cache.PSObject.Properties['DownloadCenterDetails']) {
+        $cache | Add-Member -NotePropertyName DownloadCenterDetails -NotePropertyValue @()
+    }
+
+    return $cache
+}
+
+function Save-SurfaceDriverIndexCache {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [psobject]$Cache,
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder
+    )
+
+    $cachePath = Get-SurfaceDriverIndexCachePath -DriversFolder $DriversFolder
+    $Cache | ConvertTo-Json -Depth 10 | Set-Content -Path $cachePath -Encoding UTF8
+}
+
+function ConvertTo-SurfaceComparableName {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Text
+    )
+
+    # Normalize Surface marketing strings into a comparable family key.
+    # This intentionally strips consumer/commercial/processor qualifiers so we can join Sources A/B/C.
+    $value = [System.Net.WebUtility]::HtmlDecode($Text)
+    if ([string]::IsNullOrWhiteSpace($value)) {
+        return $null
+    }
+
+    $value = $value.Trim()
+    $value = $value -replace '\(', ' '
+    $value = $value -replace '\)', ' '
+    $value = $value -replace ',', ' '
+
+    # Normalize punctuation that frequently differs between Support/Learn pages
+    # (e.g. Wi‑Fi unicode hyphen, AT&T, Y!mobile)
+    $value = $value -replace '[-\u2010\u2011\u2012\u2013\u2014\u2212]', ' '
+    $value = $value -replace '&', ' '
+    $value = $value -replace '!', ' '
+    $value = $value -replace '™', ' '
+
+    $value = $value -replace '(?i)\bMicrosoft\b', ''
+    $value = $value -replace '(?i)\bfor\s+Business\b', ''
+    $value = $value -replace '(?i)\bConsumer\b', ''
+    $value = $value -replace '(?i)\bCommercial\b', ''
+
+    # Strip processor/connection qualifiers that cause mismatches between WMI, Learn, and Support naming.
+    $value = $value -replace '(?i)\bwith\s+Intel\b', ''
+    $value = $value -replace '(?i)\bIntel\s+processor\b', ''
+    $value = $value -replace '(?i)\bIntel\b', ''
+    $value = $value -replace '(?i)\bSnapdragon\s+processor\b', ''
+    $value = $value -replace '(?i)\bSnapdragon\b', ''
+    $value = $value -replace '(?i)\bwith\s+5G\b', ''
+    $value = $value -replace '(?i)\bLTE\b', ''
+    $value = $value -replace '(?i)\b4G\b', ''
+    $value = $value -replace '(?i)\bprocessor\b', ''
+
+    # Cleanup: remove orphaned "with" left behind by earlier removals (e.g., "Surface Pro 9 with Intel Processor")
+    $value = $value -replace '(?i)\bwith\b', ''
+    $value = $value -replace '\s+', ' '
+
+    return $value.Trim().ToUpperInvariant()
+}
+
+function Get-SurfaceSystemSkuReferenceIndex {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder
+    )
+
+    # Source A: Learn page with authoritative Device / System Model / System SKU table
+    $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+    if ($cache.SkuIndex -and $cache.SkuIndex.Count -gt 0) {
+        return @($cache.SkuIndex)
+    }
+
+    $url = 'https://learn.microsoft.com/en-us/surface/surface-system-sku-reference'
+    WriteLog "Surface cache: Downloading System SKU reference table from $url"
+
+    $headers = @{ 'User-Agent' = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)' }
+    $webContent = Invoke-WebRequest -Uri $url -UseBasicParsing -Headers $headers
+    $html = $webContent.Content
+
+    $skuRows = [System.Collections.Generic.List[pscustomobject]]::new()
+
+    $rowMatches = [regex]::Matches($html, '<tr[^>]*>(.*?)</tr>', [System.Text.RegularExpressions.RegexOptions]::Singleline)
+    foreach ($rowMatch in $rowMatches) {
+        $rowContent = $rowMatch.Groups[1].Value
+        $cellMatches = [regex]::Matches($rowContent, '<td[^>]*>\s*(?:<p[^>]*>)?(.*?)(?:</p>)?\s*</td>', [System.Text.RegularExpressions.RegexOptions]::Singleline)
+        if ($cellMatches.Count -lt 3) { continue }
+
+        $device = ([System.Net.WebUtility]::HtmlDecode(($cellMatches[0].Groups[1].Value).Trim()))
+        $systemModel = ([System.Net.WebUtility]::HtmlDecode(($cellMatches[1].Groups[1].Value).Trim()))
+        $systemSkuRaw = ([System.Net.WebUtility]::HtmlDecode(($cellMatches[2].Groups[1].Value).Trim()))
+
+        if ([string]::IsNullOrWhiteSpace($device) -or [string]::IsNullOrWhiteSpace($systemSkuRaw)) { continue }
+
+        $skuList = @($systemSkuRaw)
+
+        foreach ($sku in $skuList) {
+            if ([string]::IsNullOrWhiteSpace($sku)) { continue }
+            $skuRows.Add([pscustomobject]@{
+                    Device      = $device
+                    SystemModel = $systemModel
+                    SystemSku   = $sku.Trim().ToUpperInvariant()
+                })
+        }
+    }
+
+    $cache.SkuIndex = @($skuRows)
+    Save-SurfaceDriverIndexCache -Cache $cache -DriversFolder $DriversFolder
+    WriteLog "Surface cache: Stored $($skuRows.Count) SKU entries."
+
+    return @($skuRows)
+}
+
+function Get-SurfaceDownloadCenterDetails {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder,
+        [Parameter(Mandatory = $true)]
+        [string]$ModelLink,
+        [Parameter()]
+        [string]$ModelName = $null
+    )
+
+    # Source C: Download Center details page (window.__DLCDetails__) containing file names + direct URLs
+    $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+    $existing = @($cache.DownloadCenterDetails | Where-Object { $_.Link -eq $ModelLink } | Select-Object -First 1)
+    if ($existing.Count -gt 0 -and $existing[0].Files -and $existing[0].Files.Count -gt 0) {
+        # Backfill Model into cache when available
+        if (-not [string]::IsNullOrWhiteSpace($ModelName)) {
+            if (-not $existing[0].PSObject.Properties['Model'] -or [string]::IsNullOrWhiteSpace($existing[0].Model)) {
+                try {
+                    $existing[0] | Add-Member -NotePropertyName Model -NotePropertyValue $ModelName -Force
+
+                    $newDetails = [System.Collections.Generic.List[pscustomobject]]::new()
+                    foreach ($item in @($cache.DownloadCenterDetails)) {
+                        if ($null -ne $item -and $item.PSObject.Properties['Link'] -and $item.Link -ne $ModelLink) {
+                            $newDetails.Add($item)
+                        }
+                    }
+                    $newDetails.Add($existing[0])
+                    $cache.DownloadCenterDetails = @($newDetails)
+                    Save-SurfaceDriverIndexCache -Cache $cache -DriversFolder $DriversFolder
+                }
+                catch {
+                    WriteLog "Surface cache: Failed to backfill Model for DownloadCenterDetails entry '$ModelLink'. Error: $($_.Exception.Message)"
+                }
+            }
+        }
+
+        return @($existing[0].Files)
+    }
+
+    WriteLog "Surface cache: Downloading Download Center details from $ModelLink"
+    $headers = @{ 'User-Agent' = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64)' }
+    $downloadPageContent = Invoke-WebRequest -Uri $ModelLink -UseBasicParsing -Headers $headers
+
+    $scriptPattern = '<script>window.__DLCDetails__={(.*?)}<\/script>'
+    $scriptMatch = [regex]::Match($downloadPageContent.Content, $scriptPattern)
+    if (-not $scriptMatch.Success) {
+        WriteLog "Surface cache: Could not find window.__DLCDetails__ on $ModelLink"
+        return @()
+    }
+
+    $scriptContent = $scriptMatch.Groups[1].Value
+    $downloadFilePattern = '"name":"([^"]+\.(?:msi|zip))",[^}]*?"url":"(.*?)"'
+    $downloadFileMatches = [regex]::Matches($scriptContent, $downloadFilePattern, [System.Text.RegularExpressions.RegexOptions]::IgnoreCase)
+
+    $files = [System.Collections.Generic.List[pscustomobject]]::new()
+    foreach ($downloadFile in $downloadFileMatches) {
+        $currentFileName = $downloadFile.Groups[1].Value
+        $fileUrl = $downloadFile.Groups[2].Value
+        if ([string]::IsNullOrWhiteSpace($currentFileName) -or [string]::IsNullOrWhiteSpace($fileUrl)) { continue }
+
+        $files.Add([pscustomobject]@{
+                Name = $currentFileName
+                Url  = $fileUrl
+            })
+    }
+
+    # Persist into cache
+    if ($files.Count -gt 0) {
+        $detailsEntry = [pscustomobject][ordered]@{
+            Model = $ModelName
+            Link  = $ModelLink
+            Files = @($files)
+        }
+
+        $newDetails = [System.Collections.Generic.List[pscustomobject]]::new()
+        foreach ($item in @($cache.DownloadCenterDetails)) {
+            if ($null -ne $item -and $item.PSObject.Properties['Link'] -and $item.Link -ne $ModelLink) {
+                $newDetails.Add($item)
+            }
+        }
+        $newDetails.Add($detailsEntry)
+        $cache.DownloadCenterDetails = @($newDetails)
+        Save-SurfaceDriverIndexCache -Cache $cache -DriversFolder $DriversFolder
+    }
+
+    return @($files)
+}
+
+function Get-SurfaceSystemSkuListForMicrosoftDriver {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder,
+        [Parameter(Mandatory = $true)]
+        [string]$ModelName,
+        [Parameter(Mandatory = $true)]
+        [string]$ModelLink
+    )
+
+    $skuIndex = Get-SurfaceSystemSkuReferenceIndex -DriversFolder $DriversFolder
+    if ($null -eq $skuIndex -or $skuIndex.Count -eq 0) {
+        return @()
+    }
+
+    $files = Get-SurfaceDownloadCenterDetails -DriversFolder $DriversFolder -ModelLink $ModelLink -ModelName $ModelName
+    $fileNames = @($files | ForEach-Object { $_.Name })
+
+    # Infer architecture hints from the MSI naming convention (best-effort)
+    $archHint = $null
+    if ($fileNames -match '(?i)_ARM_') {
+        $archHint = 'ARM64'
+    }
+    elseif ($fileNames -match '(?i)withIntel|_Intel_|Intel') {
+        $archHint = 'x64'
+    }
+    elseif ($ModelName -match '(?i)\bSQ3\b|\bSnapdragon\b') {
+        $archHint = 'ARM64'
+    }
+    elseif ($ModelName -match '(?i)with Intel') {
+        $archHint = 'x64'
+    }
+
+    # Surface Pro (generic) is ambiguous in the SKU table because Surface Pro (5th Gen) and
+    # Surface Pro with LTE Advanced (5th Gen) both reuse SystemModel="Surface Pro".
+    # The "Surface Pro" driver pack does not have a unique SystemSKU value on the Learn page.
+    if ($ModelName.Trim() -match '(?i)^Surface\s+Pro$') {
+        return @()
+    }
+
+    # Build multiple candidate keys for models that contain multiple variants in one string
+    # Example: "Surface Pro 7+ and Surface Pro 7+ LTE"
+    $familyKeyCandidates = [System.Collections.Generic.List[string]]::new()
+    $familyKeySet = [System.Collections.Generic.HashSet[string]]::new([System.StringComparer]::OrdinalIgnoreCase)
+
+    $primaryKey = ConvertTo-SurfaceComparableName -Text $ModelName
+    if (-not [string]::IsNullOrWhiteSpace($primaryKey) -and $familyKeySet.Add($primaryKey)) {
+        $familyKeyCandidates.Add($primaryKey) | Out-Null
+    }
+
+    $parts = [regex]::Split($ModelName, '(?i)\s+and\s+')
+
+    # Track when the model text contains both LTE and non-LTE variants (e.g. "Surface Go 2 and Surface Go 2 LTE")
+    $hasLtePart = (@($parts | Where-Object { $_ -match '(?i)\bLTE\b' }).Count -gt 0)
+    $hasNonLtePart = (@($parts | Where-Object { $_ -notmatch '(?i)\bLTE\b' }).Count -gt 0)
+
+    foreach ($part in @($parts)) {
+        if ([string]::IsNullOrWhiteSpace($part)) { continue }
+        $candidate = ConvertTo-SurfaceComparableName -Text $part
+        if (-not [string]::IsNullOrWhiteSpace($candidate) -and $familyKeySet.Add($candidate)) {
+            $familyKeyCandidates.Add($candidate) | Out-Null
+        }
+    }
+
+    if ($familyKeyCandidates.Count -eq 0) {
+        return @()
+    }
+
+    # Surface 3 has multiple carrier/region variants that share the same SystemModel ("Surface 3").
+    # Add a base key so we can match all Surface 3 SKU rows, then refine down to the correct variant.
+    if ($ModelName -match '(?i)^Surface\s+3\b') {
+        $surface3BaseKey = 'SURFACE 3'
+        if ($familyKeySet.Add($surface3BaseKey)) {
+            $familyKeyCandidates.Add($surface3BaseKey) | Out-Null
+        }
+    }
+
+    # Surface Go variants share the same SystemModel ("Surface Go") in the SKU table.
+    # Use a generation-aware base key so we don't cross-match Go vs Go 2/3/4 SKU rows.
+    if ($ModelName -match '(?i)^Surface\s+Go\s+2\b') {
+        $surfaceGoBaseKey = 'SURFACE GO 2'
+        if ($familyKeySet.Add($surfaceGoBaseKey)) {
+            $familyKeyCandidates.Add($surfaceGoBaseKey) | Out-Null
+        }
+    }
+    elseif ($ModelName -match '(?i)^Surface\s+Go\s+3\b') {
+        $surfaceGoBaseKey = 'SURFACE GO 3'
+        if ($familyKeySet.Add($surfaceGoBaseKey)) {
+            $familyKeyCandidates.Add($surfaceGoBaseKey) | Out-Null
+        }
+    }
+    elseif ($ModelName -match '(?i)^Surface\s+Go\s+4\b') {
+        $surfaceGoBaseKey = 'SURFACE GO 4'
+        if ($familyKeySet.Add($surfaceGoBaseKey)) {
+            $familyKeyCandidates.Add($surfaceGoBaseKey) | Out-Null
+        }
+    }
+    elseif ($ModelName -match '(?i)^Surface\s+Go\b') {
+        $surfaceGoBaseKey = 'SURFACE GO'
+        if ($familyKeySet.Add($surfaceGoBaseKey)) {
+            $familyKeyCandidates.Add($surfaceGoBaseKey) | Out-Null
+        }
+    }
+
+    # Surface Pro 9 with 5G: the SKU table rows use SystemModel "Surface Pro 9".
+    # Add a base key so we can match the Pro 9 SKU rows, then refine down to the 5G rows.
+    if (($ModelName -match '(?i)^Surface\s+Pro\s+9\b') -and ($ModelName -match '(?i)\b5G\b')) {
+        $surfacePro9BaseKey = 'SURFACE PRO 9'
+        if ($familyKeySet.Add($surfacePro9BaseKey)) {
+            $familyKeyCandidates.Add($surfacePro9BaseKey) | Out-Null
+        }
+    }
+
+    # Surface Pro with LTE Advanced maps to the "Surface Pro with LTE Advanced (5th Gen)" SKU table row.
+    # Add a base key so we can match Surface Pro rows, then refine to the LTE Advanced SKU.
+    if ($ModelName -match '(?i)^Surface\s+Pro\s+with\s+LTE\s+Advanced\b') {
+        $surfaceProBaseKey = 'SURFACE PRO'
+        if ($familyKeySet.Add($surfaceProBaseKey)) {
+            $familyKeyCandidates.Add($surfaceProBaseKey) | Out-Null
+        }
+    }
+
+    # Surface Laptop (1st Gen) maps to the base "Surface Laptop" SKU table row.
+    if (($ModelName -match '(?i)^Surface\s+Laptop\b') -and ($ModelName -match '(?i)\bGen\b')) {
+        $surfaceLaptopBaseKey = 'SURFACE LAPTOP'
+        if ($familyKeySet.Add($surfaceLaptopBaseKey)) {
+            $familyKeyCandidates.Add($surfaceLaptopBaseKey) | Out-Null
+        }
+    }
+
+    # Surface Studio (1st Gen) maps to the base "Surface Studio" SKU table row.
+    if (($ModelName -match '(?i)^Surface\s+Studio\b') -and ($ModelName -match '(?i)\bGen\b')) {
+        $surfaceStudioBaseKey = 'SURFACE STUDIO'
+        if ($familyKeySet.Add($surfaceStudioBaseKey)) {
+            $familyKeyCandidates.Add($surfaceStudioBaseKey) | Out-Null
+        }
+    }
+
+    # Surface Laptop 3/4 AMD/Intel packs map to the "Surface Laptop 3/4" SystemModel rows in the SKU table.
+    if ($ModelName -match '(?i)^Surface\s+Laptop\s+(3|4)\b' -and $ModelName -match '(?i)\b(AMD|Intel)\b') {
+        $generationMatch = [regex]::Match($ModelName, '(?i)^Surface\s+Laptop\s+(3|4)\b')
+        if ($generationMatch.Success) {
+            $surfaceLaptopGenBaseKey = "SURFACE LAPTOP $($generationMatch.Groups[1].Value)"
+            if ($familyKeySet.Add($surfaceLaptopGenBaseKey)) {
+                $familyKeyCandidates.Add($surfaceLaptopGenBaseKey) | Out-Null
+            }
+        }
+    }
+
+    # Match by any candidate key against the SKU table
+    $skuMatches = @($skuIndex | Where-Object {
+            $deviceKey = ConvertTo-SurfaceComparableName -Text $_.Device
+            $modelKey = ConvertTo-SurfaceComparableName -Text $_.SystemModel
+
+            foreach ($candidateKey in $familyKeyCandidates) {
+                if ($deviceKey -eq $candidateKey -or $modelKey -eq $candidateKey) {
+                    return $true
+                }
+            }
+
+            return $false
+        })
+
+    # Surface Hub 2 driver packs cover Surface Hub 2S + Surface Hub 3 devices.
+    # The System SKU table does not have a "Surface Hub 2" row, so map Hub 2 to all Hub SKUs.
+    if ($ModelName -match '(?i)^Surface\s+Hub\s+2\b') {
+        $hubSkuRows = @($skuIndex | Where-Object { $_.Device -match '(?i)^Surface\s+Hub' })
+        if ($hubSkuRows.Count -gt 0) {
+            $skuMatches = @($hubSkuRows)
+        }
+    }
+
+    # Surface 3: refine down to the correct SKU row based on the model variant text
+    # Use normalized text so punctuation/Unicode differences don't drop matches to zero.
+    if ($ModelName -match '(?i)^Surface\s+3\b') {
+        $modelNorm = ConvertTo-SurfaceComparableName -Text $ModelName
+
+        if ($modelNorm -match '(?i)\bWI\s+FI\b') {
+            $skuMatches = @($skuMatches | Where-Object { (ConvertTo-SurfaceComparableName -Text $_.Device) -match '(?i)\bWI\s+FI\b' })
+        }
+        elseif ($modelNorm -match '(?i)\bVERIZON\b') {
+            $skuMatches = @($skuMatches | Where-Object { (ConvertTo-SurfaceComparableName -Text $_.Device) -match '(?i)\bVERIZON\b' })
+        }
+        elseif ($modelNorm -match '(?i)\bOUTSIDE\s+OF\s+NORTH\s+AMERICA\b|\bY\s+MOBILE\b') {
+            $skuMatches = @($skuMatches | Where-Object { (ConvertTo-SurfaceComparableName -Text $_.Device) -match '(?i)\bOUTSIDE\s+OF\s+NORTH\s+AMERICA\b|\bY\s+MOBILE\b' })
+        }
+        elseif ($modelNorm -match '(?i)\bNORTH\s+AMERICA\b') {
+            # "North America (non-AT&T)" should map to the North America row (not AT&T/Verizon/outside-of-North-America)
+            $skuMatches = @($skuMatches | Where-Object {
+                    $deviceNorm = ConvertTo-SurfaceComparableName -Text $_.Device
+                    ($deviceNorm -match '(?i)\bNORTH\s+AMERICA\b') -and
+                    ($deviceNorm -notmatch '(?i)\bOUTSIDE\b|\bY\s+MOBILE\b') -and
+                    ($deviceNorm -notmatch '(?i)\bAT\s+T\b|\bVERIZON\b')
+                })
+        }
+        elseif (($modelNorm -match '(?i)\bAT\s+T\b') -and ($modelNorm -notmatch '(?i)\bNON\s+AT\s+T\b')) {
+            $skuMatches = @($skuMatches | Where-Object { (ConvertTo-SurfaceComparableName -Text $_.Device) -match '(?i)\bAT\s+T\b' })
+        }
+    }
+
+    # Surface Go: keep LTE SKU only for LTE-only models; exclude LTE SKU for non-LTE-only models.
+    # If the model name includes BOTH LTE and non-LTE variants (joined with "and"), do not filter.
+    # Surface Go 3 driver packs are treated as covering LTE + non-LTE unless explicitly labeled otherwise.
+    if ($ModelName -match '(?i)^Surface\s+Go\b') {
+        $isSurfaceGo3Base = ($ModelName -match '(?i)^Surface\s+Go\s+3\b') -and ($ModelName -notmatch '(?i)\bLTE\b')
+
+        if (-not $isSurfaceGo3Base) {
+            if (-not ($hasLtePart -and $hasNonLtePart)) {
+                if ($ModelName -match '(?i)\bLTE\b') {
+                    $skuMatches = @($skuMatches | Where-Object { $_.Device -match '(?i)\bLTE\b' })
+                }
+                else {
+                    $skuMatches = @($skuMatches | Where-Object { $_.Device -notmatch '(?i)\bLTE\b' })
+                }
+            }
+        }
+    }
+
+    # Surface Pro 9 with 5G (SQ3): keep only the 5G SKU rows (U.S. + outside of U.S.).
+    if (($ModelName -match '(?i)^Surface\s+Pro\s+9\b') -and ($ModelName -match '(?i)\b5G\b')) {
+        $skuMatches = @($skuMatches | Where-Object { $_.Device -match '(?i)\b5G\b' })
+    }
+
+    # Surface Pro 10: split non-5G vs 5G SKU rows so the two driver packs don't share the same SystemSKUs.
+    if ($ModelName -match '(?i)^Surface\s+Pro\s+10\b') {
+        if ($ModelName -match '(?i)\b5G\b') {
+            $skuMatches = @($skuMatches | Where-Object {
+                    ($_.SystemSku -match '^SURFACE_PRO_10_WITH_5G_FOR_BUSINESS_') -or
+                    ($_.Device -match '(?i)\bwith\s+5G\b')
+                })
+        }
+        else {
+            $skuMatches = @($skuMatches | Where-Object { $_.SystemSku -eq 'SURFACE_PRO_10_FOR_BUSINESS_2079' })
+        }
+    }
+
+    # Surface Pro with LTE Advanced: restrict to the LTE Advanced (5th Gen) SKU.
+    if ($ModelName -match '(?i)^Surface\s+Pro\s+with\s+LTE\s+Advanced\b') {
+        $skuMatches = @($skuMatches | Where-Object { $_.SystemSku -eq 'SURFACE_PRO_1807' })
+    }
+
+    # Surface Laptop 3/4: filter to AMD vs Intel rows (prevents AMD packs from inheriting Intel SKUs and vice-versa).
+    if ($ModelName -match '(?i)^Surface\s+Laptop\s+(3|4)\b') {
+        if ($ModelName -match '(?i)\bAMD\b') {
+            $skuMatches = @($skuMatches | Where-Object { $_.Device -match '(?i)\bAMD\b' })
+        }
+        elseif ($ModelName -match '(?i)\bIntel\b') {
+            $skuMatches = @($skuMatches | Where-Object { $_.Device -match '(?i)\bIntel\b' })
+        }
+    }
+
+    # Apply architecture filtering when we can infer it
+    if ($archHint -eq 'ARM64') {
+        # ARM variants are typically called out as Snapdragon / SQ3 / 5G in the Learn table
+        $skuMatches = @($skuMatches | Where-Object {
+                ($_.Device -match '(?i)Snapdragon|SQ3|with 5G') -or
+                ($_.SystemModel -match '(?i)Snapdragon|SQ3|with 5G')
+            })
+    }
+    elseif ($archHint -eq 'x64') {
+        # x64 variants are often NOT labeled "Intel" in the Learn table (e.g. Surface Pro 9).
+        # Treat "not Snapdragon/SQ3/5G" as the x64 bucket.
+        $skuMatches = @($skuMatches | Where-Object {
+                ($_.Device -notmatch '(?i)Snapdragon|SQ3|with 5G') -and
+                ($_.SystemModel -notmatch '(?i)Snapdragon|SQ3|with 5G')
+            })
+    }
+
+    $skus = @($skuMatches | ForEach-Object { $_.SystemSku } | Where-Object { -not [string]::IsNullOrWhiteSpace($_) } | Sort-Object -Unique)
+    return $skus
+}
+
+Export-ModuleMember -Function `
+    Get-SurfaceDriverIndexCachePath, `
+    Import-SurfaceDriverIndexCache, `
+    Save-SurfaceDriverIndexCache, `
+    ConvertTo-SurfaceComparableName, `
+    Get-SurfaceSystemSkuReferenceIndex, `
+    Get-SurfaceDownloadCenterDetails, `
+    Get-SurfaceSystemSkuListForMicrosoftDriver
\ No newline at end of file
diff --git a/FFUDevelopment/FFU.Common/FFU.Common.Drivers.psm1 b/FFUDevelopment/FFU.Common/FFU.Common.Drivers.psm1
index fed8f7b..75c9ddd 100644
--- a/FFUDevelopment/FFU.Common/FFU.Common.Drivers.psm1
+++ b/FFUDevelopment/FFU.Common/FFU.Common.Drivers.psm1
@@ -276,6 +276,20 @@ function Update-DriverMappingJson {
             }
         }
 
+        # Microsoft Surface: resolve System SKU list (best-effort) using Sources A + C and cached results
+        $surfaceSystemSkuList = @()
+        if ($driver.Make -eq 'Microsoft') {
+            if ($driver.PSObject.Properties['Link'] -and -not [string]::IsNullOrWhiteSpace($driver.Link)) {
+                try {
+                    $surfaceSystemSkuList = Get-SurfaceSystemSkuListForMicrosoftDriver -DriversFolder $DriversFolder -ModelName $driver.Model -ModelLink $driver.Link
+                }
+                catch {
+                    WriteLog "Warning: Failed to resolve Surface SystemSku list for '$($driver.Model)'. Error: $($_.Exception.Message)"
+                    $surfaceSystemSkuList = @()
+                }
+            }
+        }
+
         $existingEntry = $mappingList | Where-Object { $_.Manufacturer -eq $driver.Make -and $_.Model -eq $driver.Model } | Select-Object -First 1
 
         if ($null -ne $existingEntry) {
@@ -316,6 +330,26 @@ function Update-DriverMappingJson {
                 }
             }
 
+            if ($driver.Make -eq 'Microsoft' -and $surfaceSystemSkuList -and $surfaceSystemSkuList.Count -gt 0) {
+                $desiredSkus = @($surfaceSystemSkuList | Sort-Object -Unique)
+                if ($existingEntry.PSObject.Properties['SystemSku']) {
+                    $currentSkus = @($existingEntry.SystemSku)
+                    $currentNormalized = @($currentSkus | ForEach-Object { if ($null -ne $_) { $_.ToString().Trim().ToUpperInvariant() } }) | Sort-Object -Unique
+                    $desiredNormalized = @($desiredSkus | ForEach-Object { if ($null -ne $_) { $_.ToString().Trim().ToUpperInvariant() } }) | Sort-Object -Unique
+
+                    if (($currentNormalized -join '|') -ne ($desiredNormalized -join '|')) {
+                        WriteLog "Updating SystemSku list for 'Microsoft - $($driver.Model)'."
+                        $existingEntry.SystemSku = $desiredSkus
+                        $entryUpdated = $true
+                    }
+                }
+                else {
+                    WriteLog "Adding SystemSku list for 'Microsoft - $($driver.Model)'."
+                    $existingEntry | Add-Member -NotePropertyName SystemSku -NotePropertyValue $desiredSkus
+                    $entryUpdated = $true
+                }
+            }
+
             if ($entryUpdated) {
                 $updatedCount++
             }
@@ -333,6 +367,9 @@ function Update-DriverMappingJson {
             if ($driver.Make -eq 'Lenovo' -and -not [string]::IsNullOrWhiteSpace($machineTypeValue)) {
                 $newEntry | Add-Member -NotePropertyName MachineType -NotePropertyValue $machineTypeValue
             }
+            if ($driver.Make -eq 'Microsoft' -and $surfaceSystemSkuList -and $surfaceSystemSkuList.Count -gt 0) {
+                $newEntry | Add-Member -NotePropertyName SystemSku -NotePropertyValue @($surfaceSystemSkuList | Sort-Object -Unique)
+            }
 
             $mappingList.Add($newEntry)
             WriteLog "Adding new mapping for '$($driver.Make) - $($driver.Model)' with path '$($driver.DriverPath)'."
@@ -778,4 +815,8 @@ function Get-LenovoPSREFToken {
 # SECTION: Module Export
 # --------------------------------------------------------------------------
 
-Export-ModuleMember -Function Compress-DriverFolderToWim, Update-DriverMappingJson, Test-ExistingDriver, Get-LenovoPSREFToken
\ No newline at end of file
+Export-ModuleMember -Function `
+    Compress-DriverFolderToWim, `
+    Update-DriverMappingJson, `
+    Test-ExistingDriver, `
+    Get-LenovoPSREFToken
\ No newline at end of file
diff --git a/FFUDevelopment/FFU.Common/FFU.Common.psd1 b/FFUDevelopment/FFU.Common/FFU.Common.psd1
index 71d11c5..bf0361d 100644
--- a/FFUDevelopment/FFU.Common/FFU.Common.psd1
+++ b/FFUDevelopment/FFU.Common/FFU.Common.psd1
@@ -67,6 +67,7 @@ Description = 'Common functions shared between FFU Builder UI and the BuildFFUVM
 
 # Modules to import as nested modules of the module specified in RootModule/ModuleToProcess
 NestedModules = @('FFU.Common.Drivers.psm1', 
+               'FFU.Common.Drivers.Microsoft.psm1',
                'FFU.Common.Drivers.Dell.psm1',
                'FFU.Common.Winget.psm1', 
                'FFU.Common.Parallel.psm1',
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.Microsoft.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.Microsoft.psm1
index 2896160..3fc216b 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.Microsoft.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.Microsoft.psm1
@@ -10,12 +10,33 @@ function Get-MicrosoftDriversModelList {
     [CmdletBinding()]
     param(
         [hashtable]$Headers, # Pass necessary headers
-        [string]$UserAgent # Pass UserAgent
+        [string]$UserAgent, # Pass UserAgent
+        [Parameter(Mandatory = $true)]
+        [string]$DriversFolder
     )
 
     $url = "https://support.microsoft.com/en-us/surface/download-drivers-and-firmware-for-surface-09bb2e09-2a4b-cb69-0951-078a7739e120"
     $models = @()
 
+    # Load cached model list first (Source B) to keep the UI fast.
+    # The cache is refreshed automatically when missing or invalid.
+    try {
+        $cachePath = Get-SurfaceDriverIndexCachePath -DriversFolder $DriversFolder
+        if (Test-Path -Path $cachePath -PathType Leaf) {
+            $cacheAgeDays = ((Get-Date) - (Get-Item -Path $cachePath).LastWriteTime).TotalDays
+            if ($cacheAgeDays -lt 7) {
+                $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+                if ($cache.ModelIndex -and $cache.ModelIndex.Count -gt 0) {
+                    WriteLog "Surface cache: Using cached Microsoft model list ($($cache.ModelIndex.Count) models)."
+                    return @($cache.ModelIndex)
+                }
+            }
+        }
+    }
+    catch {
+        WriteLog "Surface cache: Failed to load cached Microsoft model list. Falling back to online parse. Error: $($_.Exception.Message)"
+    }
+
     try {
         WriteLog "Getting Surface driver information from $url"
         $OriginalVerbosePreference = $VerbosePreference
@@ -70,6 +91,18 @@ function Get-MicrosoftDriversModelList {
             }
         }
         WriteLog "Parsing complete. Found $($models.Count) models."
+
+        # Persist model list (Source B) into the local cache for fast UI population.
+        try {
+            $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+            $cache.ModelIndex = @($models)
+            Save-SurfaceDriverIndexCache -Cache $cache -DriversFolder $DriversFolder
+            WriteLog "Surface cache: Saved Microsoft model list to cache."
+        }
+        catch {
+            WriteLog "Surface cache: Failed to save Microsoft model list. Error: $($_.Exception.Message)"
+        }
+
         return $models
     }
     catch {
@@ -152,49 +185,123 @@ function Save-MicrosoftDriversTask {
         ### GET THE DOWNLOAD LINK
         $status = "Getting download link..."
         if ($null -ne $ProgressQueue) { Invoke-ProgressUpdate -ProgressQueue $ProgressQueue -Identifier $modelName -Status $status }
-        WriteLog "Getting download page content for $modelName from $modelLink"
-        $OriginalVerbosePreference = $VerbosePreference
-        $VerbosePreference = 'SilentlyContinue'
-        # Use passed-in UserAgent and Headers
-        $downloadPageContent = Invoke-WebRequest -Uri $modelLink -UseBasicParsing -Headers $Headers -UserAgent $UserAgent
-        $VerbosePreference = $OriginalVerbosePreference
-        WriteLog "Complete"
 
-        $status = "Parsing download page..."
-        if ($null -ne $ProgressQueue) { Invoke-ProgressUpdate -ProgressQueue $ProgressQueue -Identifier $modelName -Status $status }
-        WriteLog "Parsing download page for file"
-        $scriptPattern = '<script>window.__DLCDetails__={(.*?)}<\/script>'
-        $scriptMatch = [regex]::Match($downloadPageContent.Content, $scriptPattern)
+        # Initialize Win10/Win11 link variables
+        $win10Link = $null
+        $win10FileName = $null
+        $win11Link = $null
+        $win11FileName = $null
 
-        if ($scriptMatch.Success) {
-            $scriptContent = $scriptMatch.Groups[1].Value
-            # $downloadFilePattern = '"name":"(.*?)",.*?"url":"(.*?)"'
-            $downloadFilePattern = '"name":"([^"]+\.(?:msi|zip))",[^}]*?"url":"(.*?)"'
-            $downloadFileMatches = [regex]::Matches($scriptContent, $downloadFilePattern, [System.Text.RegularExpressions.RegexOptions]::IgnoreCase)
+        # Prefer cached Download Center details (Source C) to avoid unnecessary internet calls and cache rewrites
+        $useCachedDownloadCenterDetails = $false
+        try {
+            $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+            $cachedDetails = @($cache.DownloadCenterDetails | Where-Object { $_.Link -eq $modelLink } | Select-Object -First 1)
+            if ($cachedDetails.Count -gt 0 -and $cachedDetails[0].Files -and $cachedDetails[0].Files.Count -gt 0) {
+                $useCachedDownloadCenterDetails = $true
+                WriteLog "Surface cache: Using cached Download Center details for $modelName from $modelLink"
 
+                foreach ($downloadFile in @($cachedDetails[0].Files)) {
+                    if ($null -eq $downloadFile) { continue }
+                    $currentFileName = $downloadFile.Name
+                    $fileUrl = $downloadFile.Url
+                    if ([string]::IsNullOrWhiteSpace($currentFileName) -or [string]::IsNullOrWhiteSpace($fileUrl)) { continue }
 
-            $win10Link = $null
-            $win10FileName = $null
-            $win11Link = $null
-            $win11FileName = $null
-
-            # Iterate through all matches to find potential Win10 and Win11 links
-            foreach ($downloadFile in $downloadFileMatches) {
-                $currentFileName = $downloadFile.Groups[1].Value
-                $fileUrl = $downloadFile.Groups[2].Value
-
-                if ($currentFileName -match "Win10") {
-                    $win10Link = $fileUrl
-                    $win10FileName = $currentFileName
-                    WriteLog "Found Win10 link: $win10FileName"
-                }
-                elseif ($currentFileName -match "Win11") {
-                    $win11Link = $fileUrl
-                    $win11FileName = $currentFileName
-                    WriteLog "Found Win11 link: $win11FileName"
+                    if ($currentFileName -match "Win10") {
+                        $win10Link = $fileUrl
+                        $win10FileName = $currentFileName
+                        WriteLog "Found Win10 link (cached): $win10FileName"
+                    }
+                    elseif ($currentFileName -match "Win11") {
+                        $win11Link = $fileUrl
+                        $win11FileName = $currentFileName
+                        WriteLog "Found Win11 link (cached): $win11FileName"
+                    }
                 }
             }
+        }
+        catch {
+            WriteLog "Surface cache: Failed loading cached Download Center details for '$modelName'. Error: $($_.Exception.Message)"
+        }
 
+        # Cache miss: download and parse the model's Download Center page (Source C), then backfill the cache
+        if (-not $useCachedDownloadCenterDetails) {
+            WriteLog "Getting download page content for $modelName from $modelLink"
+            $OriginalVerbosePreference = $VerbosePreference
+            $VerbosePreference = 'SilentlyContinue'
+            # Use passed-in UserAgent and Headers
+            $downloadPageContent = Invoke-WebRequest -Uri $modelLink -UseBasicParsing -Headers $Headers -UserAgent $UserAgent
+            $VerbosePreference = $OriginalVerbosePreference
+            WriteLog "Complete"
+
+            $status = "Parsing download page..."
+            if ($null -ne $ProgressQueue) { Invoke-ProgressUpdate -ProgressQueue $ProgressQueue -Identifier $modelName -Status $status }
+            WriteLog "Parsing download page for file"
+            $scriptPattern = '<script>window.__DLCDetails__={(.*?)}<\/script>'
+            $scriptMatch = [regex]::Match($downloadPageContent.Content, $scriptPattern)
+
+            if ($scriptMatch.Success) {
+                $scriptContent = $scriptMatch.Groups[1].Value
+                # $downloadFilePattern = '"name":"(.*?)",.*?"url":"(.*?)"'
+                $downloadFilePattern = '"name":"([^"]+\.(?:msi|zip))",[^}]*?"url":"(.*?)"'
+                $downloadFileMatches = [regex]::Matches($scriptContent, $downloadFilePattern, [System.Text.RegularExpressions.RegexOptions]::IgnoreCase)
+
+                # Iterate through all matches to find potential Win10 and Win11 links
+                foreach ($downloadFile in $downloadFileMatches) {
+                    $currentFileName = $downloadFile.Groups[1].Value
+                    $fileUrl = $downloadFile.Groups[2].Value
+
+                    if ($currentFileName -match "Win10") {
+                        $win10Link = $fileUrl
+                        $win10FileName = $currentFileName
+                        WriteLog "Found Win10 link: $win10FileName"
+                    }
+                    elseif ($currentFileName -match "Win11") {
+                        $win11Link = $fileUrl
+                        $win11FileName = $currentFileName
+                        WriteLog "Found Win11 link: $win11FileName"
+                    }
+                }
+
+                # Update local cache with Download Center file details (Source C) for this model.
+                # This runs during download (not during Get Models) so it won't slow the listview population.
+                try {
+                    $filesForCache = [System.Collections.Generic.List[pscustomobject]]::new()
+                    if ($win10Link -and $win10FileName) {
+                        $filesForCache.Add([pscustomobject]@{ Name = $win10FileName; Url = $win10Link })
+                    }
+                    if ($win11Link -and $win11FileName) {
+                        $filesForCache.Add([pscustomobject]@{ Name = $win11FileName; Url = $win11Link })
+                    }
+
+                    if ($filesForCache.Count -gt 0) {
+                        $cache = Import-SurfaceDriverIndexCache -DriversFolder $DriversFolder
+                        $detailsEntry = [pscustomobject][ordered]@{
+                            Model = $modelName
+                            Link  = $modelLink
+                            Files = @($filesForCache)
+                        }
+
+                        $newDetails = [System.Collections.Generic.List[pscustomobject]]::new()
+                        foreach ($item in @($cache.DownloadCenterDetails)) {
+                            if ($null -ne $item -and $item.PSObject.Properties['Link'] -and $item.Link -ne $modelLink) {
+                                $newDetails.Add($item)
+                            }
+                        }
+                        $newDetails.Add($detailsEntry)
+                        $cache.DownloadCenterDetails = @($newDetails)
+                        Save-SurfaceDriverIndexCache -Cache $cache -DriversFolder $DriversFolder
+                    }
+                }
+                catch {
+                    WriteLog "Surface cache: Failed updating Download Center details cache for '$modelName'. Error: $($_.Exception.Message)"
+                }
+
+                $useCachedDownloadCenterDetails = $true
+            }
+        }
+
+        if ($useCachedDownloadCenterDetails) {
             # Decision logic to select the appropriate download link
             $downloadLink = $null
             $fileName = $null
diff --git a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1 b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
index 540c38f..4cbd33d 100644
--- a/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
+++ b/FFUDevelopment/FFUUI.Core/FFUUI.Core.Drivers.psm1
@@ -170,7 +170,7 @@ function Convert-DriverItemToJsonModel {
 
     switch ($SelectedMake) {
         'Microsoft' {
-            $rawModels = Get-MicrosoftDriversModelList -Headers $Headers -UserAgent $UserAgent
+            $rawModels = Get-MicrosoftDriversModelList -Headers $Headers -UserAgent $UserAgent -DriversFolder $localDriversFolder
         }
         'Dell' {
             $rawModels = Get-DellDriversModelList -WindowsRelease $localWindowsRelease -DriversFolder $localDriversFolder -Make $SelectedMake
@@ -969,6 +969,11 @@ function Invoke-DownloadSelectedDrivers {
                         Model      = $modelName
                         DriverPath = $driverPath
                     }
+
+                    if ($driverMetadata.PSObject.Properties['Link'] -and -not [string]::IsNullOrWhiteSpace($driverMetadata.Link)) {
+                        $driverRecord | Add-Member -NotePropertyName Link -NotePropertyValue $driverMetadata.Link
+                    }
+
                     if ($driverMetadata.PSObject.Properties['SystemId'] -and -not [string]::IsNullOrWhiteSpace($driverMetadata.SystemId)) {
                         $driverRecord | Add-Member -NotePropertyName SystemId -NotePropertyValue $driverMetadata.SystemId
                     }
diff --git a/FFUDevelopment/WinPEDeployFFUFiles/ApplyFFU.ps1 b/FFUDevelopment/WinPEDeployFFUFiles/ApplyFFU.ps1
index acf40fc..c08f3f6 100644
--- a/FFUDevelopment/WinPEDeployFFUFiles/ApplyFFU.ps1
+++ b/FFUDevelopment/WinPEDeployFFUFiles/ApplyFFU.ps1
@@ -23,10 +23,10 @@ function Get-HardDrive() {
     if ($manufacturer -eq 'Microsoft Corporation' -and $model -eq 'Virtual Machine') {
         WriteLog 'Running in a Hyper-V VM. Getting virtual disk on Index 0 and SCSILogicalUnit 0'
         $diskDriveCandidates = @(Get-CimInstance -Class 'Win32_DiskDrive' | Where-Object { $_.MediaType -eq 'Fixed hard disk media' `
-                -and $_.Model -eq 'Microsoft Virtual Disk'
-                -and $_.Index -eq 0 `
-                -and $_.SCSILogicalUnit -eq 0
-        })
+                    -and $_.Model -eq 'Microsoft Virtual Disk' `
+                    -and $_.Index -eq 0 `
+                    -and $_.SCSILogicalUnit -eq 0
+            })
     }
     else {
         WriteLog 'Not running in a VM. Getting physical disk drive'
@@ -74,7 +74,13 @@ function Invoke-Process {
 
         [Parameter()]
         [ValidateNotNullOrEmpty()]
-        [string]$ArgumentList
+        [string]$ArgumentList,
+
+        [Parameter()]
+        [switch]$IgnoreExitCode,
+
+        [Parameter()]
+        [switch]$PassThruExitCode
     )
 
     $ErrorActionPreference = 'Stop'
@@ -96,19 +102,39 @@ function Invoke-Process {
             $cmd = Start-Process @startProcessParams
             $cmdOutput = Get-Content -Path $stdOutTempFile -Raw
             $cmdError = Get-Content -Path $stdErrTempFile -Raw
+
             if ($cmd.ExitCode -ne 0) {
+                # Non-terminating mode: capture output to Scriptlog and continue
+                if ($IgnoreExitCode) {
+                    if ([string]::IsNullOrEmpty($cmdOutput) -eq $false) {
+                        WriteLog $cmdOutput
+                    }
+                    if ([string]::IsNullOrEmpty($cmdError) -eq $false) {
+                        WriteLog $cmdError
+                    }
+                    if ($PassThruExitCode) {
+                        return $cmd.ExitCode
+                    }
+                    return
+                }
+
                 if ($cmdError) {
                     throw $cmdError.Trim()
                 }
                 if ($cmdOutput) {
                     throw $cmdOutput.Trim()
                 }
+                throw "Process failed. ExitCode = $($cmd.ExitCode)."
             }
             else {
                 if ([string]::IsNullOrEmpty($cmdOutput) -eq $false) {
                     WriteLog $cmdOutput
                 }
             }
+
+            if ($PassThruExitCode) {
+                return $cmd.ExitCode
+            }
         }
     }
     catch {
@@ -558,6 +584,21 @@ function Find-DriverMappingRule {
             return $null
         }
         'Microsoft' {
+            # Prefer System SKU matching for Microsoft/Surface when available.
+            if (-not [string]::IsNullOrWhiteSpace($systemSkuNormalized)) {
+                foreach ($rule in $rulesForMake) {
+                    if ($rule.PSObject.Properties['SystemSku'] -and $null -ne $rule.SystemSku) {
+                        foreach ($sku in @($rule.SystemSku)) {
+                            if (-not [string]::IsNullOrWhiteSpace($sku) -and $sku.Trim().ToUpperInvariant() -eq $systemSkuNormalized) {
+                                WriteLog "DriverMapping: Microsoft SystemSku '$systemSkuNormalized' matched '$($rule.Model)'."
+                                return $rule
+                            }
+                        }
+                    }
+                }
+            }
+
+            # Fallback to model string comparison (legacy behavior).
             foreach ($rule in $rulesForMake) {
                 $ruleModelNorm = ConvertTo-ComparableModelName -Text $rule.Model
                 if (-not [string]::IsNullOrWhiteSpace($ruleModelNorm) -and $ruleModelNorm -eq $normalizedModel) {
@@ -729,67 +770,67 @@ function Test-DriverFolderHasInstallableContent {
     
         return $false
     }
-        catch {
-            WriteLog "Failed to inspect driver folder '$Path': $($_.Exception.Message)"
-            return $false
+    catch {
+        WriteLog "Failed to inspect driver folder '$Path': $($_.Exception.Message)"
+        return $false
+    }
+}
+    
+function Get-AvailableDriveLetter {
+    $usedLetters = (Get-PSDrive -PSProvider FileSystem).Name | ForEach-Object { $_.ToUpperInvariant() }
+    for ($ascii = [int][char]'Z'; $ascii -ge [int][char]'A'; $ascii--) {
+        $candidate = [char]$ascii
+        if ($usedLetters -notcontains $candidate) {
+            return $candidate
         }
     }
+    return $null
+}
     
-    function Get-AvailableDriveLetter {
-        $usedLetters = (Get-PSDrive -PSProvider FileSystem).Name | ForEach-Object { $_.ToUpperInvariant() }
-        for ($ascii = [int][char]'Z'; $ascii -ge [int][char]'A'; $ascii--) {
-            $candidate = [char]$ascii
-            if ($usedLetters -notcontains $candidate) {
-                return $candidate
-            }
-        }
-        return $null
+function New-DriverSubstMapping {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$SourcePath
+    )
+    
+    $resolvedPath = (Resolve-Path -Path $SourcePath -ErrorAction Stop).Path
+    $driveLetter = Get-AvailableDriveLetter
+    if ($null -eq $driveLetter) {
+        throw 'No drive letters are available for SUBST mapping.'
     }
+    $driveName = "$driveLetter`:"
+    $mappedPath = "$driveLetter`:\"
+    WriteLog "Mapping driver folder '$resolvedPath' to $driveName with SUBST."
+    $escapedPath = $resolvedPath -replace '"', '""'
+    $arguments = "/c subst $driveName `"$escapedPath`""
+    Invoke-Process -FilePath cmd.exe -ArgumentList $arguments
+    return [PSCustomObject]@{
+        DriveLetter = $driveLetter
+        DriveName   = $driveName
+        DrivePath   = $mappedPath
+    }
+}
     
-    function New-DriverSubstMapping {
-        [CmdletBinding()]
-        param(
-            [Parameter(Mandatory = $true)]
-            [string]$SourcePath
-        )
+function Remove-DriverSubstMapping {
+    [CmdletBinding()]
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$DriveLetter
+    )
     
-        $resolvedPath = (Resolve-Path -Path $SourcePath -ErrorAction Stop).Path
-        $driveLetter = Get-AvailableDriveLetter
-        if ($null -eq $driveLetter) {
-            throw 'No drive letters are available for SUBST mapping.'
-        }
-        $driveName = "$driveLetter`:"
-        $mappedPath = "$driveLetter`:\"
-        WriteLog "Mapping driver folder '$resolvedPath' to $driveName with SUBST."
-        $escapedPath = $resolvedPath -replace '"', '""'
-        $arguments = "/c subst $driveName `"$escapedPath`""
+    $driveName = "$DriveLetter`:"
+    WriteLog "Removing SUBST drive $driveName"
+    try {
+        $arguments = "/c subst $driveName /d"
         Invoke-Process -FilePath cmd.exe -ArgumentList $arguments
-        return [PSCustomObject]@{
-            DriveLetter = $driveLetter
-            DriveName   = $driveName
-            DrivePath   = $mappedPath
-        }
     }
-    
-    function Remove-DriverSubstMapping {
-        [CmdletBinding()]
-        param(
-            [Parameter(Mandatory = $true)]
-            [string]$DriveLetter
-        )
-    
-        $driveName = "$DriveLetter`:"
-        WriteLog "Removing SUBST drive $driveName"
-        try {
-            $arguments = "/c subst $driveName /d"
-            Invoke-Process -FilePath cmd.exe -ArgumentList $arguments
-        }
-        catch {
-            WriteLog "Failed to remove SUBST drive $($driveName): $_"
-        }
+    catch {
+        WriteLog "Failed to remove SUBST drive $($driveName): $_"
     }
+}
         
-    #Get USB Drive and create log file
+#Get USB Drive and create log file
 $LogFileName = 'ScriptLog.txt'
 $USBDrive = Get-USBDrive
 New-item -Path $USBDrive -Name $LogFileName -ItemType "file" -Force | Out-Null
@@ -841,11 +882,11 @@ else {
     foreach ($currentDisk in $diskDriveCandidates) {
         $sizeGB = [math]::Round(($currentDisk.Size / 1GB), 2)
         $displayList += [PSCustomObject]@{
-            Disk         = $currentDisk.Index
-            'Size (GB)'  = $sizeGB
-            'Sector'     = $currentDisk.BytesPerSector
-            'Bus Type'   = $currentDisk.InterfaceType
-            Model        = $currentDisk.Model
+            Disk        = $currentDisk.Index
+            'Size (GB)' = $sizeGB
+            'Sector'    = $currentDisk.BytesPerSector
+            'Bus Type'  = $currentDisk.InterfaceType
+            Model       = $currentDisk.Model
         }
     }
     $displayList | Format-Table -AutoSize -Property Disk, 'Size (GB)', Sector, 'Bus Type', Model
@@ -1562,64 +1603,181 @@ if ($null -ne $DriverSourcePath) {
         Write-Host "Installing drivers from WIM: $DriverSourcePath"
         $TempDriverDir = "W:\TempDrivers"
         try {
+            # Create working folder for WIM-based drivers
             WriteLog "Creating temporary directory for drivers at $TempDriverDir"
             New-Item -Path $TempDriverDir -ItemType Directory -Force | Out-Null
             
+            # Mount the driver WIM read-only so DISM can recurse the extracted INF tree
             WriteLog "Mounting WIM contents to $TempDriverDir"
             Write-Host "Mounting WIM contents to $TempDriverDir"
             # For some reason can't use /mount-image with invoke-process, so using dism.exe directly
             dism.exe /Mount-Image /ImageFile:$DriverSourcePath /Index:1 /MountDir:$TempDriverDir /ReadOnly /optimize
+            $mountExitCode = $LASTEXITCODE
+            if ($mountExitCode -ne 0) {
+                throw "DISM WIM mount failed. LastExitCode = $mountExitCode."
+            }
             WriteLog "WIM mount successful."
 
+            # Inject drivers into the offline Windows image; failures here should not stop deployment
             WriteLog "Injecting drivers from $TempDriverDir"
             Write-Host "Injecting drivers from $TempDriverDir"
             Write-Host "This may take a while, please be patient."
-            Invoke-Process dism.exe "/image:W:\ /Add-Driver /Driver:""$TempDriverDir"" /Recurse"
-            WriteLog "Driver injection from WIM succeeded."
-            Write-Host "Driver injection from WIM succeeded."
+            $driverInjectExitCode = Invoke-Process -FilePath dism.exe -ArgumentList "/image:W:\ /Add-Driver /Driver:""$TempDriverDir"" /Recurse" -IgnoreExitCode -PassThruExitCode
+            if ($driverInjectExitCode -ne 0) {
+                $warningMessage = "Warning: One or more drivers failed to inject from WIM. ExitCode = $driverInjectExitCode. Continuing deployment."
+                WriteLog $warningMessage
+                Write-Host $warningMessage -ForegroundColor Yellow
 
+                # Copy setupapi.offline.log to the USB drive when driver injection fails
+
+                $setupApiLogPath = 'W:\Windows\INF\setupapi.offline.log'
+                if (Test-Path -Path $setupApiLogPath) {
+                    try {
+                        Invoke-Process xcopy.exe """$setupApiLogPath"" ""$USBDrive"" /Y"
+                    }
+                    catch {
+                        WriteLog "Warning: Failed to copy setupapi.offline.log to $USBDrive. "
+                    }
+                }
+                else {
+                    WriteLog "Warning: setupapi.offline.log not found at $setupApiLogPath"
+                }
+            }
+            else {
+                WriteLog "Driver injection from WIM succeeded."
+                Write-Host "Driver injection from WIM succeeded."
+            }
         }
         catch {
-            WriteLog "An error occurred during WIM driver installation: $_"
-            # Copy DISM log to USBDrive for debugging
-            invoke-process xcopy.exe "X:\Windows\logs\dism\dism.log $USBDrive /Y"
-            throw $_
+            $warningMessage = "Warning: An error occurred during WIM driver installation. Continuing deployment."
+            WriteLog $warningMessage
+            Write-Host $warningMessage -ForegroundColor Yellow
+
+            # Copy troubleshooting logs to the USB drive when driver installation fails
+            try {
+                Invoke-Process cmd.exe "/c copy /Y ""X:\Windows\logs\dism\dism.log"" ""$($USBDrive)dism_driverinject.log"""
+            }
+            catch {
+                WriteLog "Warning: Failed to copy dism.log to $USBDrive."
+            }
+
+            $setupApiLogPath = 'W:\Windows\INF\setupapi.offline.log'
+            if (Test-Path -Path $setupApiLogPath) {
+                try {
+                    Invoke-Process xcopy.exe """$setupApiLogPath"" ""$USBDrive"" /Y"
+                }
+                catch {
+                    WriteLog "Warning: Failed to copy setupapi.offline.log to $USBDrive."
+                }
+            }
+            else {
+                WriteLog "Warning: setupapi.offline.log not found at $setupApiLogPath"
+            }
         }
         finally {
             if (Test-Path -Path $TempDriverDir) {
+                # Always attempt to unmount and clean up; unmount failures should not stop deployment
                 WriteLog "Unmounting WIM from $TempDriverDir"
                 Write-Host "Unmounting WIM from $TempDriverDir"
-                Invoke-Process dism.exe "/Unmount-Image /MountDir:""$TempDriverDir"" /Discard"
-                WriteLog "Unmount successful."
-                Write-Host "Unmount successful."
+                try {
+                    Invoke-Process dism.exe "/Unmount-Image /MountDir:""$TempDriverDir"" /Discard"
+                    WriteLog "Unmount successful."
+                    Write-Host "Unmount successful."
+                }
+                catch {
+                    $warningMessage = "Warning: Failed to unmount WIM from $TempDriverDir. Continuing cleanup."
+                    WriteLog $warningMessage
+                    Write-Host $warningMessage -ForegroundColor Yellow
+                }
+
                 WriteLog "Cleaning up temporary driver directory: $TempDriverDir"
                 Write-Host "Cleaning up temporary driver directory: $TempDriverDir"
-                Remove-Item -Path $TempDriverDir -Recurse -Force
-                WriteLog "Cleanup successful."
-                Write-Host "Cleanup successful."
+                try {
+                    Remove-Item -Path $TempDriverDir -Recurse -Force
+                    WriteLog "Cleanup successful."
+                    Write-Host "Cleanup successful."
+                }
+                catch {
+                    $warningMessage = "Warning: Failed to clean up temporary driver directory: $TempDriverDir."
+                    WriteLog $warningMessage
+                    Write-Host $warningMessage -ForegroundColor Yellow
+                }
             }
         }
     }
     elseif ($DriverSourceType -eq 'Folder') {
         $substMapping = $null
         try {
+            # Use SUBST to shorten long paths for DISM /Add-Driver
             $substMapping = New-DriverSubstMapping -SourcePath $DriverSourcePath
             $shortDriverPath = $substMapping.DrivePath
             WriteLog "Injecting drivers from folder via SUBST. Source: $DriverSourcePath, Mapped: $($substMapping.DriveName)"
             Write-Host "Injecting drivers from folder: $shortDriverPath"
             Write-Host "This may take a while, please be patient."
-            Invoke-Process dism.exe "/image:W:\ /Add-Driver /Driver:$shortDriverPath /Recurse"
-            WriteLog "Driver injection from folder succeeded."
-            Write-Host "Driver injection from folder succeeded."
+
+            # Inject drivers into the offline Windows image; failures here should not stop deployment
+            $driverInjectExitCode = Invoke-Process -FilePath dism.exe -ArgumentList "/image:W:\ /Add-Driver /Driver:$shortDriverPath /Recurse" -IgnoreExitCode -PassThruExitCode
+            if ($driverInjectExitCode -ne 0) {
+                $warningMessage = "Warning: One or more drivers failed to inject from folder. ExitCode = $driverInjectExitCode. Continuing deployment."
+                WriteLog $warningMessage
+                Write-Host $warningMessage -ForegroundColor Yellow
+
+                # Copy setupapi.offline.log to the USB drive when driver injection fails
+                $setupApiLogPath = 'W:\Windows\INF\setupapi.offline.log'
+                if (Test-Path -Path $setupApiLogPath) {
+                    try {
+                        Invoke-Process xcopy.exe """$setupApiLogPath"" ""$USBDrive"" /Y"
+                    }
+                    catch {
+                        WriteLog "Warning: Failed to copy setupapi.offline.log to $USBDrive. "
+                    }
+                }
+                else {
+                    WriteLog "Warning: setupapi.offline.log not found at $setupApiLogPath"
+                }
+            }
+            else {
+                WriteLog "Driver injection from folder succeeded."
+                Write-Host "Driver injection from folder succeeded."
+            }
         }
         catch {
-            WriteLog "An error occurred during folder driver installation: $_"
-            Invoke-Process xcopy.exe "X:\Windows\logs\dism\dism.log $USBDrive /Y"
-            throw $_
+            $warningMessage = "Warning: An error occurred during folder driver installation. Continuing deployment."
+            WriteLog $warningMessage
+            Write-Host $warningMessage -ForegroundColor Yellow
+
+            # Copy troubleshooting logs to the USB drive when driver installation fails
+            try {
+                Invoke-Process xcopy.exe "X:\Windows\logs\dism\dism.log $USBDrive /Y"
+            }
+            catch {
+                WriteLog "Warning: Failed to copy dism.log to $USBDrive."
+            }
+
+            $setupApiLogPath = 'W:\Windows\INF\setupapi.offline.log'
+            if (Test-Path -Path $setupApiLogPath) {
+                try {
+                    Invoke-Process xcopy.exe """$setupApiLogPath"" ""$USBDrive"" /Y"
+                }
+                catch {
+                    WriteLog "Warning: Failed to copy setupapi.offline.log to $USBDrive."
+                }
+            }
+            else {
+                WriteLog "Warning: setupapi.offline.log not found at $setupApiLogPath"
+            }
         }
         finally {
+            # Always attempt to remove SUBST mapping; failures here should not stop deployment
             if ($null -ne $substMapping) {
-                Remove-DriverSubstMapping -DriveLetter $substMapping.DriveLetter
+                try {
+                    Remove-DriverSubstMapping -DriveLetter $substMapping.DriveLetter
+                }
+                catch {
+                    $warningMessage = "Warning: Failed to remove SUBST mapping $($substMapping.DriveLetter). Continuing deployment."
+                    WriteLog $warningMessage
+                    Write-Host $warningMessage -ForegroundColor Yellow
+                }
             }
         }
     }