ThinkPad UltraSlim USB DVD Burner -- is a small form factor external portable DVD and CD recordable drive that can be attached to Notebooks with USB2.0 port or USB3.0 port. With 9.5mm UltraSlim engine, 20% slimmer than previous DVD Burner, with premium outlook, ThinkPad UltraSlim USB DVD Burner brings you the best user experience.Conforms with industry standard specifications for the following types of media: CD-R, CD-ROM, CD-RW, DVD-R, DVD-R(dual-layer recording), DVD-RAM, DVD-RW, DVD+R, DVD+R(dual-layer recording), and DVD+RW