ROG Maximus XI Hero BIOS settings

[vovin]

It worked for me with iMac Pro set for sure. Never tried Mac Pro 7.1 really. In general, as per OpenCore Install Guide

For this Coffee Lake example, we'll chose the iMac19,1 SMBIOS - this is done intentionally for compatibility's sake. There are two main SMBIOS used for Coffee Lake:

iMac19,1 - For Mojave and newer
iMac18,3 - For High Sierra and older
You'll use 18,3 when you have a Pascal or Maxwell dGPU and are limited to versions of macOS with Web Drivers