Ok, so, I've done just about everything I could think of to try and resolve this issue. I've updated the kernel to 5,2,1, since 5,1+ was said to have support for the card? Either way, didn't work. I've also updated the BIOS to the latest version. Neither of these solved the issue. FTR, the OS recognises and is able to see the card, but is unsure what to do with it.
Any and all help is appreciated. Thank you.