The US424 is a 4-port USB peripheral sharing device that enables 4 computers to share the use of 4 USB devices - a keyboard, mouse and up to two peripheral devices. It eliminates the added expense of having a separate USB keyboard, mouse and peripheral device(s) for each computer. The US424 all-in-one design allows for a neat and tidy installation - no need to connect 4 separate USB cables to the computer, thus eliminating cable clutter.