Review on Tripp Lite 4 Port DisplayPort/USB KVM Switch with HDMI/USB Ports, 4K 60 Hz, HDR, HDCP 2.2, IR, USB Sharing, and USB 3.0 Cables - Black (B005-HUA4) by Brian Inman

So far, so good. I haven't tried either the IR remote or the button combo just to switch the buttons on the front. Works for me; It's in the server room. I have connected Xeon WinServer 2012R2, Core2 Ubuntu 20 and several different RasPi flavors. Everything shifts fine. Just note that this kit DOES NOT include any cables. I was lucky enough to have cables lying around from a previous HDMI KVM switch that was slowly failing for a year and a half. Addendum: If you connect Rasp Pis to this thing, you *have* to do it individually. Switch to the channel for the Pi, then turn on the Pi. Otherwise, the dumb Pi won't see the video upload and assumes it's running headless.