LG GSA-E40L 18x USB 2.0 External DVD&plusmn;RW LS Drive (Black) LG GSA-E40L 18x USB 2.0 External Double Layer DVDRW Drive with LightScribe General Features: Color: Black/Silver USB 2.0 interface 2 MB Buffer Average Access Time: CD: 135 ms, DVD: 145 ms LightScribe technology Buffer Under-run Protection Write Speed: CD-R: 4x/8x/16x/24x/32x/40x/48x CD-RW: 4x/10x/16x/24x/32x DVD-R: 2x/4x/8x/16x/18x DVD-RW: 1x/2x/4x/6x DVD+R: 2.4x/4x/8x/12x/16x/18x DVD+RW: 2.4x/4x/6x/8x - Power Adapter (100 - 240V 47/63 Hz)