Lite-On DS-8A5S. CD write speed: 24 x, CD rewrite speed: 24 x, DVD+R write speed: 8 x. CD read speed: 24 x. DVD drive average random access time: 150 ms, CD-ROM drive average random access time: 130 ms. Drive device, buffer size: 2 MB, Interface: Serial ATA. Dimensions (WxDxH): 128 x 126.1 x 12.7 mm, Weight: 0.2 kg