X10SDV (mini & flex Atx), PCIe x4x4 bifurcation?

[ttvd]

ok i see.
check set OPROM = EFI for PCIe slot in which the AOC is installed.
you boot UEFI right ?

Yeah I boot efi (from msata, I could not get booting from builtin m2 nvme to work on this board), I tried all of them (legacy/disabled/efi) - doesn't seem to work
I found this faq on SM site, which deals with the same issue on h11/h12 - I wonder if I need to do a similar thing, but sadly I don't know which jumper settings are correct, since there is 0 info in the manual.

 

[RolloZ170]

I found this faq on SM site, which deals with the same issue on h11/h12 - I wonder if I need to do a similar thing, but sadly I don't know which jumper settings are correct, since there is 0 info in the manual.

if you have two AOC-SLG3-2M2 card one must be set to different address.
A0 first
A1 second