LG CH10LS20. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. DVD+R read speed: 12 x, DVD-R read speed: 12 x, DVD-RW read speed: 12 x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 180 ms. Interface: SATA. Compatible operating systems: Windows 7, Windows Vista, Windows XP