Samsung SE-406AB. 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: 130 ms, CD-ROM drive average random access time: 130 ms, BD-ROM average random access time: 200 ms. Drive device, buffer size: 2 MB, Interface: USB 2.0. Width: 141 mm, Depth: 161 mm, Height: 21.5 mm