To make it work with 4K monitor you have to edit the BIOS by yourself. WARNING!!! DO IT ON YOUR OWN RISK. THIS METHOD IS FOR THE DELL OPTIPLEX 3060 MFF only (it might work with SFF or MT but check ...
This is the 100% working OpenCore EFI for Dell 3070 MFF with i5-9600k on macOS Monterey 12.3 (21E230) ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results