This product integrates USB 3.0/2.0 hub, and charging function for portable devices, such as Smart phone, Tablet PC, iPhone or iPad. With this fabulous design, you can enjoy the super speed USB 3.0 data transmission between USB devices and your computer. It is fully compliant with USB 1.1/2.0 specifications which means your previous USB 1.1/2.0 devices can continue to function as usual. Besides, you can charge the portable device at the same time while USB hub function is in use.