Nextech USB 3.0 Keyboard and Mouse Switch Box (4 Ports)This USB switch box enables you to share up to four USB devices between two computers. At the touch of a button, connect either computer to a keyboard, mouse, portable hard drive, scanner, printer, or any other usb accessory. This saves you the added expense of additional USB peripherals, and helps de clutter your desk at the same time. It is USB 3. 0 compliant, supports speeds up to 5Gbps, works on most operating systems, and is backwards compatible