The Aten US421A-AT Enable 4 Computers to Share 4-Port USB 2.0 Peripheral Switch is a sharing switch designed for connecting multiple computers to a single USB 2.0 peripheral device. This switch allows 4 computers to easily share up to 4 different peripheral devices, providing a convenient solution for managing peripherals in a multi-computer setup. The Aten brand ensures reliability and quality, making this switch a dependable choice for expanding the capabilities of your computer setup.