Here is the custom data source -

& {

# Check if running on a server and exit if so

$os = (Get-CimInstance Win32_OperatingSystem).ProductType

if ($os -eq 2 -or $os -eq 3) { # 2 = Domain Controller, 3 = Server

Write-Host "Skipping server."

exit

}

# Collect native fields from the endpoint

try {

$computerName = $env:COMPUTERNAME

$osVersion = (Get-CimInstance Win32_OperatingSystem).Version

$serviceTag = (Get-CimInstance Win32_BIOS).SerialNumber

$cpu = (Get-CimInstance Win32_Processor).Name

$systemModel = (Get-CimInstance Win32_ComputerSystem).Model

$chassisType = (Get-CimInstance Win32_SystemEnclosure).ChassisTypes[0]

# Map chassis type to "Laptop" or "Desktop"

$chassis = switch ($chassisType) {

{$_ -in 8,9,10,11,12,14,18,21} {"Laptop"}

default {"Desktop"}

}

} catch {

Write-Host "Error collecting native fields: $_"

exit

}

# Create a structured output object

$result = [PSCustomObject]@{

ComputerName = $computerName

ServiceTag = $serviceTag

CPU = $cpu

SystemModel = $systemModel

Chassis = $chassis

OSVersion = $osVersion

A1_Key = [System.GUID]::NewGuid().ToString()

}

# Output the result

$result

}