Sony Optiarc BD-5300S. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. BD-ROM read speed: 8 x, BD-R read speed: 8 x, BD-RE read speed: 8 x. DVD drive average random access time: 150 ms, CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 250 ms. Interface: Serial ATA. Dimensions (WxDxH): 146 x 170 x 41.3 mm, Weight: 650 g