Lenovo IBM Multi-Burner Plus Optical Drive, Black, 2 MB, 40x, 24x, 40x, 125 ms Lenovo IBM Multi-Burner Plus Optical Drive. Product colour: Black. Drive device, buffer size: 2 MB. CD write speed: 40x, CD rewrite speed: 24x. CD read speed: 40x. Access time: 125 ms