Lenovo ThinkPad Super Multi-Burner Ultrabay Slim Drive with Flat Bezel, 2 MB, 24x, 16x, 24x, 180 ms, 150 ms Lenovo ThinkPad Super Multi-Burner Ultrabay Slim Drive with Flat Bezel. Drive device, buffer size: 2 MB. CD write speed: 24x, CD rewrite speed: 16x. CD read speed: 24x. DVD drive average random access time: 180 ms, Access time: 150 ms. Weight: 7.41 oz (210 g)