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.