Biggest challenge for using any sort of KVM is that it will have to be a DVI connection most likely, and those can get somewhat pricey. Not impossible, just runs several bucks.
has some for !$125... Which is a hefty chunk of change.
If you don\'t really
need to see the display, and can work via telnet, or some sort of Remote Console connection you can save a ton. Otherwise, swapping some cables is likely to be the cheaper route.