Hello,
 
the Z690 Classified, has PCIe Gen 5.0, the mounting system has PCIe Gen 4.0, like the graphics card I want to use. Where, in the BIOS - on this picture I posted - or generally, do I have to change the settings to PCIe Gen 4.0? Or, what do I have to do to make this compatible?

Regards!
 
Edit: I think it's PE1. Gen3 has to be Gen4 in that case.