Monoprice Blackbird 4K 4x4 HDMI Matrix, 18G, 4K@60Hz, YCbCr 4:4:4, EDID, 4K to 1080p Downscaler, IR, HDR, HDR10, HDR10+

I bought this to be able to switch a dual monitor setup plus a third monitor between two computers. They're all 2560x1440 monitors, so I put the EDID DIP switches to 1100, Copy Output 1. This way, the computers both see 2560x1440 for both monitors. The main dual display setup is OUT 1 and 2, the third monitor is OUT 3 (it's located directly in front of my steering wheel for driving games), and OUT 4 is empty. IN 1 and 2 are the main PC, and IN 3 and 4 are the second PC. To switch, on the front panel, I tap OUT 1 twice (to go back and forth between IN 1 and IN 3) and OUT 2 twice (IN 2 and 4). It only takes 3 or so seconds, and then the display's up. Critically, both computers always think they have the same 2 displays, so none of my windows get screwed up. I use a separate USB3.0 switchbox for keyboard/mouse/etc. Been doing this for a few months, and it's rock solid. Gets a little warm, but it's a solid metal case with no fan, so that's not surprising. The remote works, but the front buttons are much easier for me to use constantly through the day.

I just purchased my 8th Monoprice Blackbird 4K 4x4 HDMI Matrix for my video studio. I integrated it today as the switch between the camera & the monitors and also the PCs with the recording software. Fired right up and the picture off my 4K video camera was outstanding. They also made the unit more compact which is great as it is placed next to my camera. They took off the manual on off switch and the remote is now required for power up & down.