Plextor PX-820SA. CD write speed: 48 x, CD rewrite speed: 32 x, DVD+R write speed: 20 x. CD read speed: 48 x, CD-ROM read speed: 16 x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 140 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Interface: Serial ATA. Dimensions (WxDxH): 146 x 165 x 41.3 mm, Weight: 0.7 kg, Height: 41.3 mm