Dyconn PowerHub Super Speed 4-Port USB 3.0 Hub with Power Adapter, Alumunim Alloy 4 Super Speed USB 3.0 Ports Auto Voltage Balancing to Provide Sufficient Bus Power to Each Port Super High-Speed Data Transfer Rate Up to 5Gbps High Power Output (900mAh) High Compatibility Product Range Backwards Compatible with USB 2.0 Hot-Swap Capability Plug and Play Installation