Features USB BUS powered – No AC adapter for power needed! 12cm and 8cm DVD disc support Buffer Underrun Free Free Nero Express Software Included Manual Disc eject function Firmware live update MAC supported Specifications Drive Type: DVD Writer Enclosure Type: Slim External Loading Type: Tray load Interface: USB 2.0 Drive Mounting: Horizontal/Vertical Average Seek Time: DVD-ROM = 160ms, CD-ROM = 160ms Buffer Memory: 2MB Supported Disc Formats: DVD-RAM, DVD+R, DVD+R DL, DVD+RW, DVD-R, DVD-R DL, DVD-RW, DVD-ROM, CD-R, CD-RW, CD-ROM, CD-ROM/XA, CD-Audio, Video-CD, Photo CD, CD-I (FMV), CD-Extra, CD-TEXT E-Co Product: RoHS: Yes Magic Speed: Yes Automatic Ball Balancing System: Yes Weight Balancing System: No Firmware Live Update: Yes Buffer Underrun Free Technology: Yes Speed Adjustment Technology: Yes Double O.P.C Technology: Yes Tilt Actuator Compensation Technology: Yes Product Dimensions (WxHxD): 141x19x157mm