7 Ports USB 3.0 Hub: UGREEN 7 in 1 Power USB 3.0 Hub is equipped with 7 high-speed USB 3.0 ports. You can easily extend multiple USB devices for your laptop or PC such as a keyboard, mouse, U-Disk, printer, card reader, hard disk, camera, speaker, and more. 4 Smart Charging Ports: There are 4 USB ports of the UGREEN USB 3.0 Charging hub support charging for other devices like smartphones, tablets, earphone, USB fans, and more. The most important thing is that it could automatically detect your device's charging protocols to deliver the optimum charge, and protect the battery of your device from damage.