Lite-On External Slim 8x DVD Writer LightScribe USB. CD write speed: 24 x, CD rewrite speed: 24 x, DVD-R9 write speed: 4 x. CD read speed: 24 x. DVD drive average random access time: 130 ms, CD-ROM drive average random access time: 110 ms. Drive device, buffer size: 2 MB. Dimensions (WxDxH): 138 x 155.2 x 24.37 mm, Weight: 362.8 g