PLDS bd340i. DVD-R write speed: 16 x, DVD+R write speed: 16 x, DVD-RW write speed: 6 x. BD-R read speed: 8 x, DVD-ROM read speed: 16 x, CD-ROM read speed: 48 x. DVD drive average random access time: 150 ms, CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 250 ms. DVD-ROM transfer rate (sustained mode): 1.3 MB/s, BD-ROM transfer rate (sustained mode): 4.4 MB/s, CD transfer rate (sustained mode): 150 KB/s. Interface: SATA