Rooful 4x1 HDMI 2.1 Switch

Here's a basic, sub-$40 HDMI 2.1 switch, that's MiSTer compatible, as well as the OSSC, RetroTINK 4K & more.  It's unfortunately not PS3-compatible, however it seemed to pass CEC control, which is a cool bonus.  If you were looking for a cheap switch for both retro and modern devices up to 4K120, or 8K60, definitely consider this one.  Here's an Amazon paid affiliate link to the exact one I purchased:  https://retrorgb.link/rooful4x1hdmi21