Powershell Scanner - Script to gather info on attached monitors

Script that can be used as a powershell scanner to generate a list of all attached monitors on a system. The script will return the following dateset:

- Manufacturer
- Name
- Serialnr
- Manufactureweek
-Manufacureyear
- Connection type
- Current brightness
- Preferred display mode

<#
.SYNOPSIS
    Generate a list of monitors that are connected to an computer.

.DESCRIPTION
    This script will query a computer through WMI, asking what the serial number and manufacturer is of attached monitors.

.EXAMPLE
./Get-Monitor.ps1 'computername' -silent

.PARAMETER ComputerName
    Name of computer to query. If not given query local computer.
#>

[CmdletBinding()]
Param(
  [Parameter(Mandatory=$False,Position=1)]
   [string]$ComputerName
)

Function ConvertTo-Char ($Array) {
    $Output = ''
    ForEach($char in $Array) { 
        $Output += [char]$char -join ""
    }
    return $Output
}

Function ConvertTo-Manufacturer ($Code) {
    $Output = ''
# initialise monitor manufacturers
    $Manufacturer = @(
        [pscustomobject]@{'Monitor Manufacturer Code'='ACI';'Monitor Manufacturer'='Asus (ASUSTeK Computer Inc.)'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ACR';'Monitor Manufacturer'='Acer America Corp.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ACT';'Monitor Manufacturer'='Targa'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ADI';'Monitor Manufacturer'='ADI Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='AMW';'Monitor Manufacturer'='AMW'}
        [pscustomobject]@{'Monitor Manufacturer Code'='AOC';'Monitor Manufacturer'='AOC International (USA) Ltd.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='API';'Monitor Manufacturer'='Acer America Corp.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='APP';'Monitor Manufacturer'='Apple Computer, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ART';'Monitor Manufacturer'='ArtMedia'}
        [pscustomobject]@{'Monitor Manufacturer Code'='AST';'Monitor Manufacturer'='AST Research'}
        [pscustomobject]@{'Monitor Manufacturer Code'='AUO';'Monitor Manufacturer'='AU Optronics'}
        [pscustomobject]@{'Monitor Manufacturer Code'='BMM';'Monitor Manufacturer'='BMM'}
        [pscustomobject]@{'Monitor Manufacturer Code'='BNQ';'Monitor Manufacturer'='BenQ Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='BOE';'Monitor Manufacturer'='BOE Display Technology'}
        [pscustomobject]@{'Monitor Manufacturer Code'='CPL';'Monitor Manufacturer'='Compal Electronics, Inc. / ALFA'}
        [pscustomobject]@{'Monitor Manufacturer Code'='CPQ';'Monitor Manufacturer'='COMPAQ Computer Corp.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='CTX';'Monitor Manufacturer'='CTX - Chuntex Electronic Co.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='DEC';'Monitor Manufacturer'='Digital Equipment Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='DEL';'Monitor Manufacturer'='Dell Computer Corp.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='DPC';'Monitor Manufacturer'='Delta Electronics, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='DWE';'Monitor Manufacturer'='Daewoo Telecom Ltd'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ECS';'Monitor Manufacturer'='ELITEGROUP Computer Systems'}
        [pscustomobject]@{'Monitor Manufacturer Code'='EIZ';'Monitor Manufacturer'='EIZO'}
        [pscustomobject]@{'Monitor Manufacturer Code'='EPI';'Monitor Manufacturer'='Envision Peripherals, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='FCM';'Monitor Manufacturer'='Funai Electric Company of Taiwan'}
        [pscustomobject]@{'Monitor Manufacturer Code'='FUS';'Monitor Manufacturer'='Fujitsu Siemens'}
        [pscustomobject]@{'Monitor Manufacturer Code'='GSM';'Monitor Manufacturer'='LG Electronics Inc. (GoldStar Technology, Inc.)'}
        [pscustomobject]@{'Monitor Manufacturer Code'='GWY';'Monitor Manufacturer'='Gateway 2000'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HEI';'Monitor Manufacturer'='Hyundai Electronics Industries Co., Ltd.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HIQ';'Monitor Manufacturer'='Hyundai ImageQuest'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HIT';'Monitor Manufacturer'='Hitachi'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HSD';'Monitor Manufacturer'='Hannspree Inc'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HSL';'Monitor Manufacturer'='Hansol Electronics'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HTC';'Monitor Manufacturer'='Hitachi Ltd. / Nissei Sangyo America Ltd.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HWP';'Monitor Manufacturer'='Hewlett Packard (HP)'}
        [pscustomobject]@{'Monitor Manufacturer Code'='HPN';'Monitor Manufacturer'='Hewlett Packard (HP)'}
        [pscustomobject]@{'Monitor Manufacturer Code'='IBM';'Monitor Manufacturer'='IBM PC Company'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ICL';'Monitor Manufacturer'='Fujitsu ICL'}
        [pscustomobject]@{'Monitor Manufacturer Code'='IFS';'Monitor Manufacturer'='InFocus'}
        [pscustomobject]@{'Monitor Manufacturer Code'='IQT';'Monitor Manufacturer'='Hyundai'}
        [pscustomobject]@{'Monitor Manufacturer Code'='IVM';'Monitor Manufacturer'='Idek Iiyama North America, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='KDS';'Monitor Manufacturer'='KDS USA'}
        [pscustomobject]@{'Monitor Manufacturer Code'='KFC';'Monitor Manufacturer'='KFC Computek'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LEN';'Monitor Manufacturer'='Lenovo'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LGD';'Monitor Manufacturer'='LG Display'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LKM';'Monitor Manufacturer'='ADLAS / AZALEA'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LNK';'Monitor Manufacturer'='LINK Technologies, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LPL';'Monitor Manufacturer'='LG Philips'}
        [pscustomobject]@{'Monitor Manufacturer Code'='LTN';'Monitor Manufacturer'='Lite-On'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MAG';'Monitor Manufacturer'='MAG InnoVision'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MAX';'Monitor Manufacturer'='Maxdata Computer GmbH'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MEI';'Monitor Manufacturer'='Panasonic Comm. & Systems Co.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MEL';'Monitor Manufacturer'='Mitsubishi Electronics'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MIR';'Monitor Manufacturer'='miro Computer Products AG'}
        [pscustomobject]@{'Monitor Manufacturer Code'='MTC';'Monitor Manufacturer'='MITAC'}
        [pscustomobject]@{'Monitor Manufacturer Code'='NAN';'Monitor Manufacturer'='NANAO'}
        [pscustomobject]@{'Monitor Manufacturer Code'='NEC';'Monitor Manufacturer'='NEC Technologies, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='NOK';'Monitor Manufacturer'='Nokia'}
        [pscustomobject]@{'Monitor Manufacturer Code'='NVD';'Monitor Manufacturer'='Nvidia'}
        [pscustomobject]@{'Monitor Manufacturer Code'='OQI';'Monitor Manufacturer'='OPTIQUEST'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PBN';'Monitor Manufacturer'='Packard Bell'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PCK';'Monitor Manufacturer'='Daewoo'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PDC';'Monitor Manufacturer'='Polaroid'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PGS';'Monitor Manufacturer'='Princeton Graphic Systems'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PHL';'Monitor Manufacturer'='Philips Consumer Electronics Co'}
        [pscustomobject]@{'Monitor Manufacturer Code'='PRT';'Monitor Manufacturer'='Princeton'}
        [pscustomobject]@{'Monitor Manufacturer Code'='REL';'Monitor Manufacturer'='Relisys'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SAM';'Monitor Manufacturer'='Samsung'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SEC';'Monitor Manufacturer'='Seiko Epson Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SMC';'Monitor Manufacturer'='Samtron'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SMI';'Monitor Manufacturer'='Smile'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SNI';'Monitor Manufacturer'='Siemens Nixdorf'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SNY';'Monitor Manufacturer'='Sony Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SPT';'Monitor Manufacturer'='Sceptre'}
        [pscustomobject]@{'Monitor Manufacturer Code'='SRC';'Monitor Manufacturer'='Shamrock Technology'}
        [pscustomobject]@{'Monitor Manufacturer Code'='STN';'Monitor Manufacturer'='Samtron'}
        [pscustomobject]@{'Monitor Manufacturer Code'='STP';'Monitor Manufacturer'='Sceptre'}
        [pscustomobject]@{'Monitor Manufacturer Code'='TAT';'Monitor Manufacturer'='Tatung Co. of America, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='TRL';'Monitor Manufacturer'='Royal Information Company'}
        [pscustomobject]@{'Monitor Manufacturer Code'='TSB';'Monitor Manufacturer'='Toshiba, Inc.'}
        [pscustomobject]@{'Monitor Manufacturer Code'='UNM';'Monitor Manufacturer'='Unisys Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='VSC';'Monitor Manufacturer'='ViewSonic Corporation'}
        [pscustomobject]@{'Monitor Manufacturer Code'='WTC';'Monitor Manufacturer'='Wen Technology'}
        [pscustomobject]@{'Monitor Manufacturer Code'='ZCM';'Monitor Manufacturer'='Zenith Data Systems'}
    )
    $Output = $Manufacturer | Where-Object {$_.'Monitor Manufacturer Code' -eq $Code} | select -ExpandProperty 'Monitor Manufacturer'
    If (!$Output) {Return $Code}
    else {Return $Output}
}

# initialise result array
$Results = @()

Try {
    # query Wmi for monitor info
    If ($ComputerName) {
        $Query = Get-WmiObject -ComputerName $ComputerName -Query "Select * FROM WMIMonitorID" -Namespace root\wmi -ErrorAction Stop
    }
    else {
        $Query = Get-WmiObject -Query "Select * FROM WMIMonitorID" -Namespace root\wmi -ErrorAction Stop
    }

    ForEach ($Monitor in $Query) {
        # query Wmi for connection input type used
        $QueryConn = Get-WmiObject -Query "Select * from WmiMonitorConnectionParams" -Namespace root\wmi -ErrorAction Stop | where {$_.InstanceName -eq $Monitor.InstanceName}
        Switch ($QueryConn.VideoOutputTechnology) {
            -1  {$Connectiontype="OTHER"}
            0   {$Connectiontype="HD15 (VGA)"}
            4   {$Connectiontype="DVI"}
            5   {$Connectiontype="HDMI"}
            10  {$Connectiontype="Displayport"}
            15  {$Connectiontype="Miracast"}
            Default {$Connectiontype="Notebook or unknown"}
        }

        # query Wmi for preferred mode
        $QuerySourceMode = Get-WmiObject -Query "SELECT * FROM WmiMonitorListedSupportedSourceModes" -Namespace root\wmi -ErrorAction Stop | where {$_.InstanceName -eq $Monitor.InstanceName}
        $preferredMode = "$($QuerySourceMode.MonitorSourceModes[$QuerySourceMode.PreferredMonitorSourceModeIndex].HorizontalActivePixels)x$($QuerySourceMode.MonitorSourceModes[$QuerySourceMode.PreferredMonitorSourceModeIndex].VerticalActivePixels)"
        
        # if supported by hardware, query Wmi for current brightness
        $QueryBrightness = Get-WmiObject -Query "SELECT * FROM WmiMonitorBrightness" -Namespace root\wmi -ErrorAction SilentlyContinue | where {$_.InstanceName -eq $Monitor.InstanceName}
        If (!$QueryBrightness) {
            $Brightness = 'Not available'
        }
        else {
            $Brightness = $QueryBrightness.CurrentBrightness
        }
        
        $Results += New-Object PSObject -Property @{
             Active = $Monitor.Active
             Manufacturer = ConvertTo-Manufacturer(ConvertTo-Char($Monitor.ManufacturerName))
             UserFriendlyName = ConvertTo-Char($Monitor.userfriendlyname)
             SerialNumber = ConvertTo-Char($Monitor.serialnumberid)
             WeekOfManufacture = $Monitor.WeekOfManufacture
             YearOfManufacture = $Monitor.YearOfManufacture
             ConnectionType = $Connectiontype
             'Current brightness' = $Brightness
             'Preferred display mode' = $preferredMode

        }
    }

    $Results = $Results | Select Active,Manufacturer,UserFriendlyName,SerialNumber,WeekOfManufacture,YearOfManufacture,ConnectionType,'Current brightness','Preferred display mode' | Sort YearOfManufacture
    $results
    Exit 0
}
Catch {
    Exit $($Error[0])
}