Sony AD-7670S. CD write speed: 24 x, CD rewrite speed: 24 x, DVD+R write speed: 8 x. CD read speed: 24 x. DVD drive average random access time: 180 ms, CD-ROM drive average random access time: 150 ms. Disc loading type: Slot, Drive device, buffer size: 2 MB, Interface: Serial ATA. Burst transfer rate: 150 MB/s