Expands single 9-pin USB 2.0 header into multiple ports, up to 8 ports for sufficient internal expansion.; Comes with extra power supply to ensure stable power output for connected devices.; Equipped with magnetic base for easy fixation inside computer case, no loose movement.; Standard 9pin interface, plug and play, no driver required for quick installation.; Reliable USB 2.0 transmission, ideal for internal case fans, front panel ports and small peripherals.