Sony Optiarc AD-7713H. CD write speed: 24 x, CD rewrite speed: 24 x, DVD+R write speed: 8 x. CD read speed: 24 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 150 ms. Disc loading type: Tray, Optical drive type: DVD±R/RW, Interface: Serial ATA. Media types supported: DVD-ROM, DVD-R, DVD-R DL, DVD-RW, DVD-RAM, DVD+R, DVD+RW, DVD+R9, CD-ROM, CD-R, CD-RW, Optical disk diameter: 120 mm