This board is the best of the "metal" compatibles.

The card ran perfectly with High Sierra; however, despite being a Metal capable card, with Mojave it would never get past the startup screen (the desert scene) and load the Finder (I will spare you describing all of the dialog boxes that would not respond after logging in, and the process symbol spinning for 9 hours, all while the Finder should have been loading)

I am returning it (most graciously accepted by the seller), and purchasing a Metal-capable, Mojave compatible card that has been flashed for MAC.