The Anker Advantage: Join the 80 million+ powered by our leading technology SuperSpeed Data: Sync data at blazing speeds up to 5Gbps—fast enough to transfer an HD movie in seconds. Big Expansion: Transform one of your computer's USB ports into four. (This hub is not designed to charge devices.) Extra Tough: Precision-designed for heat resistance and incredible durability. What You Get: Anker Ultra Slim 4-Port USB 3.0 Data Hub, welcome guide, our worry-free 18-month warranty and friendly customer service.