If your monitor has multiple inputs, you can just get a USB KVM switch for 10-35 bucks. And simply switch the input on your monitors. Might make more sense in my opinion.
From my experience, if you’re running over 1080p, those KVM switches die eventually. The more monitors you have the less likely you’ll have a switch that supports 3-4 monitor set ups without costing the amount of a second PC.
costing the amount of a second PC.
Or another monitor for that matter, which is why everytime I think a KVM is a great idea, I end up looking at a new monitor instead.