PASBUY 4 Ports Auto Printer Sharing Switch Hub Box-Retail Packaging For Printer USB sharing Hub featured with metal case, Mini design. It for 1 to 4 auto sharing printing. Device with USB port, like printer, scanner, curve plotter, multifunction printer, Bluetooth equipment, up to 128 kinds Of device, can be connected to this USB sharing Hub and easily switch, so 2 to 4 computers can sharing a USB device, by this we can cut down office equipment spending and save lots of space. Switching Methods: A. Button on the device. B. Keyboard hot key( Ctrl+F11) C. Mouse kick the globe icon. Support up to 2 input, and 1 USB device output. By using this devise, 1 USB device can be shared with 1 to 4 computers, or 4 computers can share 1 printer, manually or automatically.