Powershell - Hardware auslesen mit mehreren Monitore und zwei weiteren Fragen

PS C:\WINDOWS\system32> Get-WmiObject -Class win32_bios -ComputerName xxxxxxxx


SMBIOSBIOSVersion : N2JET85W (1.63 )
Manufacturer      : LENOVO
Name              : N999999W (1.63 )
SerialNumber      : P999999D
Version           : LENOVO - 1630

$computers = Get-Content -Path $Computerliste


foreach ($computer in $computers) {
If (Test-Connection -ComputerName $computer -Count 3 -Quiet) {

    $abfrageDescription = Get-ADComputer -Filter {name -Like $Computer} -Properties description
    $abfrageBios = Get-WmiObject -Class win32_bios -ComputerName $Computer
    $abfrageHardware = Get-WmiObject -Class Win32_computerSystem -ComputerName $Computer
    $abfrageSysbuild = Get-WmiObject -Class Win32_WmiSetting -ComputerName $Computer
    $abfrageOS = Get-WmiObject -Class Win32_OperatingSystem -ComputerName $Computer
    $abfrageNetworks = Get-WmiObject -Class Win32_NetworkAdapterConfiguration -ComputerName $Computer | Where-Object {$_.IPEnabled}
    **$abfragemonitor = Get-WmiObject -Class wmimonitorid -ComputerName $computer -Namespace root\wmi**
    $abfragecpu = Get-WmiObject -Class Win32_Processor  -ComputerName $computer
    $abfrageusername = Get-ChildItem "\\$computer\c$\Users" | Sort-Object -Property LastWriteTime -Descending | Select-Object -Property Name, LastWriteTime -First 1  
    $abfragelastBoot = Get-ADComputer -Identity $Computer -Properties * | select LastLogonDate

    $abfrageIPAddress  = $Networks.IpAddress
    $abfrageMACAddress  = $Networks.MACAddress
    $abfragesystemBios = $Bios.serialnumber

**    $abfragemonitorManufacture = ($abfragemonitor.ManufacturerName -notmatch 0 | foreach {[char]$_}) -join ""  
    $abfragemonitorName = ($abfragemonitor.UserFriendlyName -notmatch 0 | foreach {[char]$_}) -join ""  
    $abfragemonitorSerial = ($abfragemonitor.SerialNumberID -notmatch 0 | foreach {[char]$_}) -join ""**  


    $OutputObj  = New-Object -TypeName PSObject
    $OutputObj | Add-Member -MemberType NoteProperty -Name ComputerName -Value $Computer.ToUpper()
    $OutputObj | Add-Member -MemberType NoteProperty -Name Description -Value $abfrageDescription.Description
    $OutputObj | Add-Member -MemberType NoteProperty -Name Manufacturer -Value $abfrageHardware.Manufacturer
    $OutputObj | Add-Member -MemberType NoteProperty -Name Model -Value $abfrageHardware.Model
    $OutputObj | Add-Member -MemberType NoteProperty -Name Processor_Type -Value $abfragecpu.Name
    $OutputObj | Add-Member -MemberType NoteProperty -Name System_Type -Value $abfrageHardware.SystemType
    $OutputObj | Add-Member -MemberType NoteProperty -Name Operating_System -Value $abfrageOS.Caption
    $OutputObj | Add-Member -MemberType NoteProperty -Name Operating_System_Version -Value $abfrageOS.version
    $OutputObj | Add-Member -MemberType NoteProperty -Name Operating_System_BuildVersion -Value $abfrageSysBuild.BuildVersion
    $OutputObj | Add-Member -MemberType NoteProperty -Name Serial_Number -Value $abfragesystemBios
    $OutputObj | Add-Member -MemberType NoteProperty -Name IP_Address -Value $abfrageIPAddress
    $OutputObj | Add-Member -MemberType NoteProperty -Name MAC_Address -Value $abfrageMACAddress
    $OutputObj | Add-Member -MemberType NoteProperty -Name Last_User -Value $abfrageusername.Name
    $OutputObj | Add-Member -MemberType NoteProperty -Name User_Last_Login -Value $abfrageusername.LastWriteTime
**    $OutputObj | Add-Member -MemberType NoteProperty -Name MonitorManufacturer -Value $abfragemonitorManufacture
    $OutputObj | Add-Member -MemberType NoteProperty -Name MonitorName -Value $abfragemonitorName
    $OutputObj | Add-Member -MemberType NoteProperty -Name MonitorSerial -Value $abfragemonitorSerial**
    $OutputObj | Add-Member -MemberType NoteProperty -Name Last_ReBoot -Value $abfragelastboot.LastLogonDate
    $OutputObj | export-csv -Path $Ausgabedatei -Append -Force
    Clear-Variable abfrage*
  }
Else {
     $Computer | out-file -Append -Encoding Default $InAktive
     }
     }