[PCI Configuration End] After installing Fenvi T919

Hey!

First up: My System(Mojave) was running like charm with everything working from the beginning! (Rampage 5 extreme; 6850k, Vega 64).

I just received my Fenvi t919 WiFi/BT Card that should be fully functional.

I installed the card, booted the system Up and experiencing PCI Configuration end and a prohibited sign. I think it hast something to do with PCI-E. The BIOS settings are alright i think. I cant find anything on the internet about this special card.

I thought because of the card fully supporting macOS there is nothing else to do than install. Do i need special kext or clover EFI settings?

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Things I tried :

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1. Removed the card which lets me boot normally. Once booted i plug in the fenvi card while the system is running and I can see the adapter getting recognized. The system is not booting only when the adapter is installed during the boot phase.
2. Tried Enabling/Disabling FixAirport, FixLan which doesn't seem to help.