BUSlink D-DBW842-U2F Slim Double Layer USB 2.0 and FireWire DVD&plusmn;RW Record up to 4 hours of movie on large capacity of 8.5 GB double layer DVD disc Customize your own DVDs and CDs with files, photos, music or videos Lightweight, ultra slim profile design is ideal for notebooks and desktops Rewrite and edit on both DVD and CD Record on both 4.7 GB DVD media or 8.5 GB Double Layer DVD media