ASUS SBC-06D2X-U. DVD+R write speed: 8 x, DVD-R write speed: 8 x, DVD-R Double Layer write speed: 6 x. DVD+R read speed: 8 x, DVD-R read speed: 8 x, DVD-R Dual Layer read speed: 6 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 190 ms, BD-ROM average random access time: 230 ms. Drive device, buffer size: 5.8 MB, Interface: USB 2.0, Optical disk diameter: 80, 120 mm. Width: 140 mm, Depth: 157 mm, Height: 18.5 mm