PLDS External 20X Super Allwrite Drive. CD write speed: 48 x, CD rewrite speed: 24 x, DVD-R9 write speed: 8 x. CD read speed: 48 x, DVD-ROM read speed: 16 x. DVD drive average random access time: 130 ms, CD-ROM drive average random access time: 130 ms. Interface: USB. Dimensions (WxDxH): 165 x 197.71 x 57.5 mm, Weight: 1.1 kg