Sony Optiarc AD-7590A. CD write speed: 24 x, CD rewrite speed: 24 x, DVD-R9 write speed: 6 x. CD read speed: 24 x, DVD+R read speed: 8 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 150 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Interface: EIDE/ATA. Media types supported: DVD-ROM, DVD-R, DVD-R DL, DVD-RW, DVD +R, DVD +RW, DVD +R9, DVD-RAM, CD-ROM, CD-R, CD-RW