Thanks....must be a Phillips it has emergency ejuct hole in middle without volume and head-phone jack.....Firmware version is BH04
If there is a volume knob, emergency eject hole (above this knob) and head-phone jack on drive = Lite-On
No volume knob, no head-phone jack and emergency eject hole in middle = Philips/(BenQ)
Use Nero InfoTool to check firmware revision.