hi i've just received my r9 390x with 8go de vram, and I plug into my mac pro, with one 6pin and one 8 pin from 2x 6pin mini on the motherboard, only on the second 16x slot position from bottom, cause this card has an iron protection too thick to enter the bottom pci_e slot, it can boot up into windows, but can't boot up to mac os, I've tried too with one 6pin and two sata cable link to 8pin to give it more power, but nothing changed, need little help please. many thanks.
btw, anyone who knows how to take off the iron procection please? thanks
btw, anyone who knows how to take off the iron procection please? thanks