Internal DVD Writer - Used Model: hitachi GH24NSDO DVD writer was used and working in our office Normal wear and tear. Please be satisfied before purchasing - No Returns Accepted See photos as part of description. M-DISC is only compatible with Windows 7, Windows 8, Windows 8.1 Windows Vista, Windows XP. Super Multi DVD Writer M-DISC™ Support Silent Play Win OS Compatible 24x Writing Speed 5V/12V 2/2.5A ROM Version: LH00 Manufactured Dec 2015