Features:This 4 ports USB 3.0 hub is a high-performance aluminum control chip USB hub. It can expand four USB ports on the computer, and support four USB high-speed devices simultaneously. It helps you to solve the problem when the USB port on your computer is not enough, can bring great convenience to you.Besides,with highest speed of 5G/S,the hub can be compatible with Win8.1, Win8, MAC and so on, fashion design and better touch sense.Interface: USB 3.0Brand new and high qualityPlug and play, easy to install4 downstream(USB 3.0 A-type)Supports 2TB at mostCould function as a charging stockCompliant with USB version 1.1/2.0Supports High-Speed(5G Mbps), Full-speed(480Mbps) and Low-speed(12Mbpsor1.5Mps) USB device profilesSupport overload voltage and inter-current protection function, can protect the connected equipment and HUB itself effectively when suddenly energizedStable performance, durable and reliableBus-Power limit Current Protection: 900mA(When external adapter applied)System requirements: Windows XP, Vista, Win8.1, Mac OS (10.X or above)