$ethernetPortSettingsRef = $wsmanConnectionObject.NewReference("SELECT * FROM AMT_EthernetPortSettings WHERE InstanceID='Intel(r) AMT Ethernet Port Settings 1'")
$ethernetPortSettingsInstance = $ethernetPortSettingsRef.Get()
$inputObject = $ethernetPortSettingsRef.CreateMethodInput("SetLinkPreference")
$inputObject.SetProperty("LinkPreference", "1")
$inputObject.SetProperty("Timeout", "60")
$outputObject = $ethernetPortSettingsRef.InvokeMethod($inputObject)
$returnValue = $outputObject.GetProperty("ReturnValue")