4-Port USB Cable KVM Switch allows users to share a VGA monitor, a USB mouse and a USB keyboard between four computers. Users can switch between computers using a manual switch located on a wired remote control that can be placed conveniently on your desk. It offers an out-of-box / entirely plug-in-play solution with no additional cables or software installation needed. It supports multiple operating systems including Windows, Sun, and Mac. It is also powered through the USB bus and thus does not require a power supply to run. It is the ideal KVM for those who want a competitively priced, entry level KVM that will allow them to multitask with four computers at their disposal.