Aten CS-22U - 2-Port USB Cable KVM Switch The CS22U is a 2-port USB Cable KVM Switch that provides a simple and quick method of selecting computers - a built-in remote port selector. This allows the CS22U unit to be hidden from sight, while the remote port selector can be placed conveniently on the desktop. The CS22U's compact all-in-one design makes it ideal for multiplatform desktop applications that require high resolution video.