Lenovo ThinkCentre & Lenovo SATA DVD-ROM. CD read speed: 40 x. Interface: Serial ATA. DVD drive average random access time: 90 ms, CD-ROM drive average random access time: 120 ms. Drive device, buffer size: 0.5 MB. Dimensions (WxDxH): 148 x 184 x 42 mm, Weight: 0.75 kg