Plextor PX-B920UF. CD write speed: 40 x, CD rewrite speed: 24 x, BD-RE write speed: 2 x. CD read speed: 40 x, DVD-RAM read speed: 5 x, DVD-ROM read speed: 16 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. Disc loading type: Tray, Drive device, buffer size: 4 MB, Interface: USB & FireWire. Media types supported: BD-ROM, BD-R SL/DL, BD-RE SL/DL, HD DVD-ROM, DVD±R DL, DVD±R, DVD±RW, DVD-RAM, CD-R, CD-RW