Plextor Blu-ray PX-B940SA. CD write speed: 40 x, CD rewrite speed: 24 x, BD-RE write speed: 2 x. CD read speed: 40 x, DVD+R read speed: 16 x, DVD-R read speed: 16 x. DVD drive average random access time: 170 ms, CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 170 ms. Disc loading type: Tray, Drive device, buffer size: 4 MB, Interface: Serial ATA. Dimensions (WxDxH): 148 x 180 x 42.3 mm, Weight: 0.82 kg