Plextor PX-L611U. 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: 160 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Interface: USB. Media types supported: DVD+R DL, DVD+R, DVD+RW, DVD-R DL, DVD-R, DVD-RW, DVD-RAM, CD-R, CD-RW, Optical disk diameter: 120 mm