Lenovo 43N3295. DVD-R write speed: 8 x, DVD+R write speed: 8 x, DVD-RW write speed: 6 x. BD-R read speed: 4 x, BD-RE read speed: 2 x, DVD-ROM read speed: 8 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 180 ms, BD-ROM average random access time: 130 ms. Interface: SATA