Lite-On EHBU212. BD-R write speed: 12 x, DVD+R write speed: 16 x, DVD-R write speed: 16 x. DVD+R read speed: 16 x, DVD-R read speed: 16 x, CD-R read speed: 48 x. CD-ROM drive average random access time: 150 ms, BD-ROM average random access time: 380 ms, DVD-RAM access time: 200 ms. Drive device, buffer size: 8 MB, Interface: USB 3.0. Dimensions (WxDxH): 168 x 198.5 x 57.5 mm, Weight: 1.2 kg