IOGEAR 4 Port VGA KVM PS2 Switch and USB - GCS1724
There is a lot to like about this model from IOGEAR although it lacks the extra audio connections of the TRENDnet TK-422DVK. This switch uses VGA connections for the video which is perfect for use with most modern displays and monitors. Perhaps the best feature of this model is it works with either USB mouse and keyboard connections or older PS/2 plugs. Also included are four cables which have VGA, PS/2, and USB connections for easy setup. However, another set of cables is needed to connect from the switch to console, so keep that in mind while shopping. That's an odd oversight, but otherwise everything you need is included with this set. The large buttons are on the front of the switch, plus you can use hotkeys or a mouse to switch between systems. This model has no additional power requirements so you don't have to worry about having a free outlet to use it.