Transmission interface: USB3.0. Transmission speed: 5Gbps. USB cable length: 30CM. No need to install any drivers, compatible with Windows 7/ Windows 10/8/8. 1/Vista/XP and other operating systems. The transmission speed of usb3.0 is up to 5Gbps per second. It is backward compatible with usb2.0 and usb1.1. The 4 ports are designed with respective current overload detection and protection functions, and the built-in LED indicator can display the status of the power supply usb interface connection.The indicator light on the top will be blue when working. Package Contents: USB 3.0 hub four ports, 1-year and friendly customer service. Please feel free to Contact us at any time.