PowerShell: Get Monitor Information

Need to check monitor details - manufacturer, model, and serial number - all at once, for asset tracking or hardware inventory? This script pulls it from the display driver and decodes it into one clean, readable output.

Prerequisites:

• Privileges: None
• Module: Built-in, no import needed

Quick Command:

function Convert-MonitorProperty {
    param($Property)
    ($Property | Where-Object { $_ -ne 0 } | ForEach-Object { [char]$_ }) -join ""
}

$monitor = Get-CimInstance -Namespace root\wmi -ClassName WmiMonitorID

[PSCustomObject]@{
    Manufacturer = Convert-MonitorProperty $monitor.ManufacturerName
    Model        = Convert-MonitorProperty $monitor.UserFriendlyName
    SerialNumber = Convert-MonitorProperty $monitor.SerialNumberID
}

Example Output:

Manufacturer Model SerialNumber
------------ ----- ------------
AOC          Q27G4 1O0R1HA011161

How It Works:

• Get-CimInstance -Namespace root\wmi -ClassName WmiMonitorID queries monitor identification data - this lives in the root\wmi namespace (driver-supplied hardware telemetry), separate from the standard root\cimv2 namespace used by most other hardware queries.
• All three properties (ManufacturerName, UserFriendlyName, SerialNumberID) come back as arrays of ASCII character codes rather than readable text, since this data originates from the monitor's raw EDID information.
• Instead of repeating the same decode logic three times, function Convert-MonitorProperty { ... } wraps it into a small, reusable function - write the logic once, call it as many times as needed.
• param($Property) defines the function's input - whatever array of numbers gets passed in when the function is called.
• Inside the function, Where-Object { $_ -ne 0 } strips padding zeros, ForEach-Object { [char]$_ } converts each number to its character, and -join "" combines them into a single string - same decoding logic as the serial number article.
• [PSCustomObject]@{ ... } builds a custom object with clean, named columns instead of running three separate commands with three separate outputs - Manufacturer, Model, and SerialNumber each call the function once, passing in the relevant raw property.