Sony BWU-300S. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 16 x. BD-R read speed: 8 x, BD-RE read speed: 8 x, DVD-ROM 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: 210 ms. Interface: Serial ATA. Dimensions (WxDxH): 148 x 195 x 42 mm, Weight: 0.9 kg