SAMSUNG TSST Ultra-Slim Optical 8X DVD Rewriter Drives SE-218GN/RSBD, M-Disc support, MAC OS X compatible Top Button Type: LED and eject button are placed on the top surface Drive Height: Ultra Slim 14mm Loading Type: Tray Interface: USB2.0 (3.0 Compatible) Buffery Memory: 0.75MB Smart Power Tilt Actuator Compensation Technology: T.A.C Buffer Under Run Free Technology