With H510 I try to use 2 PCI slots but only the card in slot 1 is recognised.
I have Nvidia 1660 super and AMD 6600XT. If AMD is GPU0 then it looks like Nvidia drivers are not loaded.
if Nvidia is GPU0 it works but then AMD os not working. I tried to set PCI in BIOS to GEN1 and GEN2, but no change
I tried 2 AMD 6600XT as well but again the card in PCI-e 2 or GPU1 is shown on the worker but does not mine