ASUS SBC-06D1S-U. DVD-R write speed: 8 x, DVD+R write speed: 8 x, DVD-RW write speed: 6 x. DVD+R read speed: 8 x, DVD-R read speed: 8 x, DVD-RW read speed: 8 x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 160 ms, BD-ROM average random access time: 240 ms. Interface: USB 2.0. Compatible operating systems: Windows 7 / Vista / XP