LG GH22LP21. DVD-R write speed: 22 x, DVD-R Double Layer write speed: 12 x, DVD+R Double Layer write speed: 16 x. CD read speed: 48 x, DVD+R read speed: 16 x, DVD-R read speed: 16 x. DVD drive average random access time: 175 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