___USB 3.0 Ports Expansion- Turn one of your computer's USB ports into four.- 4 USB devices can be connected at the same time.- White LED to indicate the working status of this USB 3.0 hub.Stable and Safe- Multi shielding to ensure stable transmission, no interference, and no delay.- Over-voltage, over-current protection, ensure the safety of your data and devices.Kindly Note- This USB 3.0 hub is designed for data sync only, not for charging.- The micro USB cable to power this hub or extension cable to extend this hub should be shorter than 1M.- 2.4GHz wireless devices, MIDI devices and some USB 3.0 devices may not be supported.- To ensure high performance for HDD, SSD and other power-hungry devices, extra main power is needed. (Power adapter and power cable sold separately).