Not sure any Intel LGA2011 says that it is Gen3. And since the PCIe controller is on the CPU...
The motherboards will run Gen3 if there is a Gen3 processor mate. Two distinctly different things I guess.
🙂But yeah I agree marketing folks really do take the p1ss as far as I am concerned.
You might have to go into your BIOS and set Gen3 by the way.
To help us help you - please provide as much information about your system and the problem as possible.