LG BH10LS. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. CD-R read speed: 48 x, BD-ROM read speed: 8 x, BD-R read speed: 8 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. DVD-ROM transfer rate (sustained mode): 22.16 MB/s, BD-ROM transfer rate (sustained mode): 287.72 MB/s, CD transfer rate (sustained mode): 7.2 KB/s. Interface: SATA