ASUS DRW-22B3S, Black, EIDE/ATA, 2 MB, 120 mm, 48x, 22x ASUS DRW-22B3S. Product colour: Black. Interface: EIDE/ATA, Drive device, buffer size: 2 MB, Optical disc diameter: 120 mm. CD write speed: 48x, DVD+R write speed: 22x, CD rewrite speed: 24x. CD read speed: 48x, CD-R read speed: 48x, CD-ROM read speed: 48x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 140 ms