Lenovo 57Y6487. CD write speed: 24 x, CD rewrite speed: 4 x. CD read speed: 24 x, DVD-ROM read speed: 8 x. Access time: 140 ms. Drive device, buffer size: 2 MB, Optical drive type: DVD, Interface: USB. Dimensions (WxDxH): 134 x 140 x 18 mm, Weight: 320 g