Hey guys, Just updated to the latest version of MacOS on my Mac Pro 4,1->5,1 and it cannot detect any graphic cards... I have 2 XFX RX 480's @ 8GB installed and the cards are no longer listed in the System Report. When I check out the PCI tab in System Report I get the message "There was an error while gathering PCI device information." The cards worked great on before the update; MacOS 10.12.3. I am currently controlling my Mac Pro via Screen Sharing from my MacBook. I have reset the PRAM but no luck. Can you guys please help me out?