This is the USB 3.1 Type C Male to USB Type A Female Adapter Cable – 6 Inch It converts a standard USB cable into a type C USB cable. This allows you to re-use your existing USB cables with a new type C devices. It is a small and portable adapter that is easy to take with you or keep in your laptop bag. To use, simply plug-in your USB A type cable, the end that normally plugs into your computer. Then plug the C side of the adapter into your device. When using USB 3 devices and a USB 3 cable, this adapter allows for transfer speeds up to 5 gigabytes per second. For more information on our products please contact our customer service department at 888 518 9505 For all your cable and connecter needs choose Show Me Cables.