USB Manual Switch: 4 Computers Share 1 USB Device
Sharing your USB device with this USB Switch Box.
This USB switch box connects up to 4 computers to one USB device.
To share a USB pheripheral like a USB camera, printer, keyboard, mouse, scanner, or modem.
You will need one USB "Type A to B" cable from each computer's USB port to the switch box.
And another "Type A to B" cable from your device to the switch.
Note: The USB Switch is different from USB HUB. If you need to connect two or more USB devices to one computer you will need a USB Hub.