Detect_Chassis.ps1

#Credit to https://powershell.one/wmi/root/cimv2/win32_systemenclosure
#Modified original script to output IsLaptop, IsDesktop, IsServer, IsOther to be used as a detection method
$Chassis = @{ 
  Name       = 'ChassisTypes'
  Expression = {
    $ChassisResult = foreach ($ChassisValue in $_.ChassisTypes) {
      switch ([int]$ChassisValue) {
        1 { 'IsOther' }
        2 { 'IsOther' }
        3 { 'IsDesktop' }
        4 { 'IsDesktop' }
        5 { 'IsDesktop' }
        6 { 'IsDesktop' }
        7 { 'IsDesktop' }
        8 { 'IsLaptop' }
        9 { 'IsLaptop' }
        10 { 'IsLaptop' }
        11 { 'IsLaptop' }
        12 { 'IsLaptop' }
        13 { 'IsOther' }
        14 { 'IsLaptop' }
        15 { 'IsDesktop' }
        16 { 'IsDesktop' }
        17 { 'IsOther' }
        18 { 'IsLaptop' }
        19 { 'IsOther' }
        20 { 'IsOther' }
        21 { 'IsLaptop' }
        22 { 'IsOther' }
        23 { 'IsServer' }
        24 { 'IsOther' }
        default { "$ChassisValue" }
      }
      
    }
    $ChassisResult
  }  
}

Get-CimInstance -ClassName Win32_SystemEnclosure | Select-Object $Chassis | foreach-object { $_.ChassisTypes }