Question KVM switch for 2 PCs, 2 protocals(DVI/HDMI), 1 monitor

[Pyramid-1957]

I'm building a new computer but keeping my old PC. My current monitor is old and is connected to the old PC via a DVI port. The new monitor will connect to my new computer via either DisplayPort_2.1 or via HDMI_2.1. I want both the old PC and the new computer to connect to the new monitor and the new computer/monitor still be able to run 4K@144Hz. I can find no KVM switch that allows two different protocols to both access a single monitor. Any suggestions?

 

[framefreak]

allows two different protocols to both access a single monitor

not pretty sure you are talking about the type or version, if you are saying a KVM that support both DVI port and HDMI or DisplayPort, well guess you might wanna an adapter better