Switch and effectively use up to four computers with VGA and DVI
dual monitor video setups with this DVI/VGA Dual Monitor USB
KVM Switch from Linkskey.
Take control of four computers while you use one DVI monitor and one VGA, and one mouse and keyboard. Switch among the four computers at the touch of a button and have four computers working for you while only using a couple monitors.
All of the needed cables are included, including the USB cables for mouse and keyboard switching. Only one USB port is used per computer for both keyboard and USB functions. For the user console, there are two USB ports for keyboard and USB.