If you see Input Not Supported Monitor error on your Windows 11/10 PC, you can apply any of the solutions in this post to resolve the issue.

To fix monitor input on your Windows 11/10 computer, do the following: Under the monitor name that is having the Input Not Supported error, click Display adapter properties for Display.

I'm currently typing this on using the RX 5700 and an monitor not on the AMD list and it is working without issues. So the RX 5700 XT does not like the Acer KG271 despite what the AMD website says.