This external dvd drive for mac and pc allows you freedom and mobility due to its small form factor design general features drive type dvd writer enclosure type external drive height slim 95mm loading type tray interface usb 20 drive mounting horizontal buffer memory 10mb dimension wxhxd 148 x 14 x 144 mm weight 255g under data transfer rates dvdr readwrite 8x 108mbsec dvd r readwrite 8x 108mbsec dvdr dual layer read 8x 108mbsec write 6x 8