Asus prime z270-p ???
If any one heve working rig with 13 -14 or more GPUs on asus prime z270-p please upload bios profil file .CMO
General instructions for this motherboard is 4g enabled. 13-14 gpu setups really depend on m2 extenders or pcie splitters.
BIOSTAR BTC 250 PRO (12 GPU) does not work with PCIe splitters.
Tested and confirmed by me…