UGREEN 4-Port USB 3.0 Switch Box Brand new, unused. Purpose/Use: A switch that allows multiple computers to use USB devices. A switch that consolidates two PCs into one. Commonly used USB devices: Keeps your desk tidy! Use one set of mouse and keyboard on either computer. Printer: Fast and efficient printing! Eliminates the hassle of plugging and unplugging cables. USB memory: Easy data sharing! You can copy and paste documents between computers. Hub: Connect multiple USB devices! Expands USB ports, allowing multiple USB devices to be shared. USB Switch for 2 PCs A switch that allows two computers to share one set of USB printers, scanners, plotters, mice, keyboards, external hard drives, and other USB devices.