LaCie Slim Blu-ray. DVD-R write speed: 8 x, DVD+R write speed: 8 x, DVD-RW write speed: 6 x. DVD+R read speed: 8 x, DVD-R read speed: 8 x, DVD-RW read speed: 6 x. Interface: USB 2.0. Compatible operating systems: Win XP SP2/Vista/7 Mac OS X 10.6 Linux, Bundled software: Cyberlink Blu-ray Disc Suite. Dimensions (WxDxH): 137 x 157 x 25 mm, Weight: 320 g