Thought you might also like to consider trying a software switch to replace your KVM and all it’s wires - I also used to use a KVM but now I use KMRemoteControl (available at http://www.derman.com) to switch between two Macs (desktop and laptop) and also a Windows PC that I use for testing things in Windows browsers - I absolutely love it. They also make an app called ClipCommControl that allows for clipboard copy & paste across multiple macs - so I can copy any text from one and paste in the other - doesn’t work with graphics or attachments but those are easy enough to copy across my network anyway.

I tried the free Synergy which does the same thing but had major problems with it and eventually gave it up and went back to KMRemoteControl, which I’ve had no problems with.

Cheers!