Sony Optiarc BD-5300S. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. DVD+R read speed: 16 x, DVD-R read speed: 16 x, DVD-RW read speed: 16 x. DVD drive average random access time: 250 ms, CD-ROM drive average random access time: 250 ms, BD-ROM average random access time: 350 ms. Interface: SATA. Dimensions (WxDxH): 146 x 170 x 41.3 mm, Weight: 650 g