The UGREEN USB 3.0 Sharing Switch is a convenient device that allows you to share USB devices between two computers. It features four USB 3.0 ports, two for each computer, and a button for switching between the two computers. The switch supports data transfer speeds of up to 5Gbps and is backward compatible with USB 2.0 and 1.1 devices. It is compatible with various operating systems, including Windows, Mac, and Linux. With this switch, you can easily share USB devices such as printers, scanners, and external hard drives between two computers.