|"Mad dog multimedia / Md-16xdvd9az usb device"|
If you want help, you need to supply the correct info. Are you asking about a Mad Dog Multimedia Megastor MD-16XDVD9A2? It appears to be an internal DVD burner (actually an NEC ND-3520A). Did you install it in an external USB case or do you actually have model MD-16XDVD9A2-EXT?