POWER STATUS: Separate LEDs indicate power status for each port and shows which USB port is in use at any given time BATTERY LIFE: Individual power switches help preserve battery life by allowing you to shut off whatever ports you don't need MULTIPLE USB PORTS: Instantly add 7 USB 2.0 ports to any electronic device by plugging it into your computer, and then connect your mouse, keyboard, external hard drives, flash drives, and so much more!