Compact and portable design, compatible with USB 1.1 and USB 2.0, easy to use and carry | Allows 4 PC to share one USB device, for example, Printer Scanner, Camera, Keyboard, and any other devices with USB | Just plug your USB device into the USB port on the sharing switch, and connects 4 PC to the other 4 ports | Equipped with respective button for each port, convenient to connect 4 devices with it, operation system support Windows 98/ME/2000/XP/Vista / Mac OS | Switch buttons in push-button form displayed on the front of the switch for each access for switching from computer to computer