I have a B650 Gaming Plus WIFI I am trying to use a m.2 expansion card with 4x m.2 slots; question is the 2nd PCI x16 slot on the mother board must be set to 4x4x4x4 to use the card, but I have no clue how to set that in BIOS. Help please
Your second PCIex16 slot only supports x4 bandwidth so it won't support the expansion card! As a matter of fact, I'm not even sure the first slot would work. Compatibility with those sort of cards are tricky.
