Plextor PX-LB950SA. BD-RE write speed: 2 x, BD-R write speed: 12 x, DVD+R write speed: 16 x. DVD+R read speed: 16 x, DVD-R read speed: 16 x, DVD-R Dual Layer read speed: 8 x. DVD drive average random access time: 170 ms, CD-ROM drive average random access time: 140 ms, BD-ROM average random access time: 280 ms. Drive device, buffer size: 8 MB, Interface: SATA, Mounting: Horizontal. Dimensions (WxDxH): 146 x 170 x 41.3 mm, Weight: 0.65 kg