$timeSynchronizationServiceRef = $wsmanConnectionObject.NewReference("SELECT * FROM AMT_TimeSynchronizationService WHERE Name='Intel(r) AMT Time Synchronization Service'")
$inputObject = $timeSynchronizationServiceRef.CreateMethodInput("EnableLocalTimeSync")
$inputObject.SetProperty("Enable", "true")
$outputObject = $timeSynchronizationServiceRef.InvokeMethod($inputObject)
$returnValue = $outputObject.GetProperty("ReturnValue")