LG BT30N. 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-ROM transfer rate (sustained mode): 11.08 MB/s, BD-ROM transfer rate (sustained mode): 26.97 MB/s, CD transfer rate (sustained mode): 3600 KB/s. Interface: SATA. Compatible operating systems: Windows XP, Windows Vista, Windows 7