Hello
I have an h110 pro btc motherboard, and after going around many times because 3 gpus could not apply -strap I discovered that you have to do with pcie ports.
Is the motherboard BIOS updated?
Did you connect the main power supply to the PCIE PWR and SATA PWR connectors?

Hello
Thanks for the help!!
I have the 3 connectors to the main power supply and I use the latest bios version of the motherborad, the 1.60
What I don't understand is because the ports work well without applying -strap, maybe they need more power?