ASUS DRW-22B3L. CD write speed: 48 x, CD rewrite speed: 24 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: 160 ms, CD-ROM drive average random access time: 140 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Optical drive type: DVD±R/RW. Media types supported: ACD, VCD, CD-I,CD-E, Photo-CD, CD-Text, CD-ROM/XA, DVD, Write methods: DAO, SAO, TAO, Optical disk diameter: 120 mm