The US224 is a system with 2 ports on the two computers share access to up to 4 USB devices to receive - a keyboard, a mouse, and up to 2 peripherals. Additional expenses yourself for a separate USB keyboard, mouse and peripherals for each computer are unnecessary. With an all-in-one design of the US224 installation is simple and straightforward - no 2 separate USB cable for computer needs and so there is no clutter.