ASUS DVD-E818A4, Tray, Vertical/Horizontal, DVD±R/RW, EIDE/ATA, 120 mm, 48x ASUS DVD-E818A4. Disc loading type: Tray, Mounting: Vertical/Horizontal. Optical drive type: DVD±R/RW, Interface: EIDE/ATA, Optical disc diameter: 120 mm. CD read speed: 48x, CD-ROM read speed: 48x, DVD+R read speed: 16x. DVD drive average random access time: 120 ms, CD-ROM drive average random access time: 120 ms. Weight: 650 g