Hi All,

i just bought 5x ROG STRIX-GTX1080-A8G to build a mining rig.

but the mobo sees only 1 GPU, any of them but only one at once.

Ive tried with:
3 different mobo, with all the BIOS settings i could think / found on internet (each mobo has a different CPU and Memory):
  ASRock H110 Pro BTC
  ASRock Z97X Killer
  Asus P5K
2 different PSU
10+ risers (to rule out risers fault)
Windows 10 & ETHOS

Could this be a nvidia vBios restriction?

Any suggestion that may help me resolve this is welcome :-)

Thank you