Plextor PX-612U. CD write speed: 24 x, CD rewrite speed: 24 x, DVD+R write speed: 8 x. CD read speed: 24 x, DVD+R read speed: 8 x, DVD-R read speed: 8 x. DVD drive average random access time: 130 ms, CD-ROM drive average random access time: 30 ms. Disc loading type: Tray, Drive device, buffer size: 1 MB, Optical drive type: DVD±R/RW. Optical disk diameter: 80, 120 mm