DriverInfoPowershell.ps1

function Get-DirSize {
param([Parameter(Mandatory = $true, ValueFromPipeline = $true)][string]$path)
    Set-Location $env:SystemDrive
    $Size = (Get-ChildItem -Path $path | Measure-Object -Property Length -Sum).Sum
    If ( $Size -lt 1KB ) { $formattedsize = "$("{0:N2}" -f $Size) B" }
    ElseIf ( $Size -lt 1MB ) { $formattedsize = "$("{0:N2}" -f ($Size / 1KB)) KB" }
    ElseIf ( $Size -lt 1GB ) { $formattedsize = "$("{0:N2}" -f ($Size / 1MB)) MB" }
    ElseIf ( $Size -lt 1TB ) { $formattedsize = "$("{0:N2}" -f ($Size / 1GB)) GB" }
    $FileCount = (Get-ChildItem -Path $path | Measure-Object).Count
    $Name = (Get-Item -Path $path).Name
    $FullPath = $path
  
    $object = New-Object -TypeName PSObject
    $object | Add-Member -MemberType NoteProperty -Name Name -Value $Name
    $object | Add-Member -MemberType NoteProperty -Name FullPath -Value $FullPath
    $object | Add-Member -MemberType NoteProperty -Name FileCount -Value $FileCount
    $object | Add-Member -MemberType NoteProperty -Name Size -Value $Size
    $object | Add-Member -MemberType NoteProperty -Name FormattedSize -Value $FormattedSize
    Write-Output $object
}

$CMModulePath = $env:SMS_ADMIN_UI_PATH.ToString().SubString(0,$Env:SMS_ADMIN_UI_PATH.Length - 5) + "\ConfigurationManager.psd1" 
Import-Module $CMModulePath
Set-Location PS1:
Get-CMDriver | Select-Object -Property ContentSourcePath -Unique | `
% { Get-DirSize $_.ContentSourcePath } | Sort-Object -Property Size -Descending | `
ft -Property Name, FullPath, FileCount, FormattedSize

<# Example Output
Name           FullPath                                                                                           FileCount FormattedSize
----           --------                                                                                           --------- -------------
Graphics       \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\video\Graphics                         228 498.17 MB    
sidwa19        \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\sidwa19                                 15 422.64 MB    
WinT           \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\wlan\Win7Plus\Win64\Drivers\WinT        21 64.80 MB     
x64            \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\dptf\drivers\x64                        34 17.16 MB     
Win10_x64      \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\phid\Win10_x64                           7 4.47 MB      
8.20           \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\video\DisplayAudio\8.20                  4 3.01 MB      
NDIS65         \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\lan\PRO1000\Winx64\NDIS65               21 2.80 MB      
6.16           \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\video\DisplayAudio\6.16                  4 1.96 MB      
x64            \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\rst\x64                                  7 1.56 MB      
x64            \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\cppc\drivers\x64                         3 108.42 KB    
wildcatpointlp \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\intelinf\wildcatpointlp                  3 46.87 KB     
broadwell      \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\intelinf\broadwell                       2 40.80 KB     
common         \\cm01\Packages\Drivers\PDP_CF-31mk5_Win10x64_V4.02L13M00\drivers\intelinf\common                          2 40.14 KB     
#>