The Adesso 7 Port USB 3.0 Hub comes with a power adapter so you never have to worry about your high power USB devices not working. The USB 3.0 connection has a fast data transfer rate - up to 5GBPS. The power-saving switch allows you to conserve energy when the USB devices are not in use and the LED's let you know which ports are in use. The unit has 7 available USB ports to enable you to use up to 7 USB devices at the same time. Simply plug the unit into an available USB port and you'll be up and running. No drivers required.