A Linksys 4-port KVM was a key part of the mainstay infrastructure of our company headquarters here (aka. my home office) for many, many years.

The hardware for it looked identical to other brands of four port KVMs available at the time, including models from Belkin and D-Link.

It went flaky at some point around mid-life, after about five years. I then cracked open the case and resoldered the external connectors to the internal PCB. It was still going strong after another five years when we replaced it with a six port model by SmartView.

The only regret about the new one, is that their eight port model would have been even more useful to us (but it wasn't available at the time).

Cheers