ASUS SDRW-08D2S-U/DWHT/G/AS. CD write speed: 24 x, CD rewrite speed: 16 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: 160 ms, CD-ROM drive average random access time: 140 ms. Drive device, buffer size: 1 MB, Interface: USB, Mounting: Vertical/Horizontal. Media types supported: Audio CD,Video CD,CD-I,CD-Extra,Photo CD,CD-Text,CD-ROM/XA,Multi-session CD,DVD Video, Optical disk diameter: 80 mm