Sony Optiarc AD-7693H-01. DVD+R write speed: 8 x, DVD-R write speed: 8 x, DVD-R Double Layer write speed: 6 x. CD read speed: 24 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 150 ms. Drive device, buffer size: 2 MB, Optical drive type: DVD±RW, Interface: Serial ATA. Dimensions (WxDxH): 128 x 129 x 127 mm, Weight: 160 g