Thanks @Skitals for this post!  I was having a tough time configuring my ASUS ROG Strix X570-E for VFIO, and the information you distilled here really helped!   For other Unraid users looking to run this board (which I recommend!), the information that @Skitals put forth is basically the same for the ASUS ROG Strix X570-E.  I will note the differences I saw in my experience.  Note this data was pulled with MB Bios 1405 (11/26/2019) [AGESA 1.0.0.4 Patch B].   UEFI / BIOS Setti