Question about Dell UltraSharp U4021QW

Yes, Mac mini M1. Works. However, the brightness and sound cannot be controlled with the keyboard. Overall, I don't like the maximum brightness of the screen. I also don't use maximum resolution because otherwise the font is so small that you can hardly read it. Honestly, I wouldn't buy it again ....

Yes, Mac mini M1 with full resolution via Thunderbolt. Works perfectly. The font is rather small but that doesn't bother me. Would buy the monitor again.

Not at the moment, but I plan to use it with a MAC with M2 process as soon as it is available. I'll be happy to share my experience then.