Sony Optiarc AD-5280S. CD write speed: 48 x, CD rewrite speed: 32 x, DVD+R write speed: 24 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. Drive device, buffer size: 2 MB, Optical drive type: DVD±R/RW, Interface: Serial ATA. Media types supported: DVD-ROM, DVD-R (DL), DVD-RW, DVD+R9, DVD+RW, CD-ROM, CD-R, CD-RW