Your only going to get HDR on HDMI ports 2 & 3. You can get 4K on all ports just not HDR.I am not able to get HDR on port 1 and 4. As a test last night, I moved my Sony X800 UHD player from HDMI 3 to HDMI 4. No more HDR from the X800's youtube app which previously was playing HDR when connected to HDMI 3. So what is the magic trick to get all ports to pass HDR content? They just do by default? Maybe a problem with youtube? I will try a UHD HDR blue-ray and see what happens.