In a previous tip, you discovered how to search for WMI classes like Win32_VideoController. Now, what exactly is the purpose of this class? You can retrieve Help information for any WMI class with the next lines of code,:
$class = [wmiclass]'Win32_VideoController'
$class.psbase.Options.UseAmendedQualifiers = $true
($class.psbase.qualifiers["description"]).Value