LG GH22NP21. CD write speed: 48 x, CD rewrite speed: 32 x, DVD+R write speed: 22 x. CD read speed: 48 x, DVD+R read speed: 16 x, DVD-R read speed: 16 x. DVD drive average random access time: 140 ms, CD-ROM drive average random access time: 120 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Interface: IDE/ATA. DVD-ROM transfer rate (sustained mode): 22.16 MB/s