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4 port USB 2.0 switch selector allows you to share one keyboard, mouse and other USB peripherals among four computers. Equipped with an independent desktop controller, you can quickly switch devices by pressing the button. Adopts standard USB 2.0 protocol with stable signal transmission, plug and play without drivers, compatible with most mainstream computer systems. All necessary USB cables are included for easy installation, ideal for multi-computer office workers, designers and gamers.