Qual a diferença en pcie e pcie gen2 ?

Change BIOS settings for the PCIe card from AUTO to GEN1 For instructions on how to change your

Gen3 slots and also external connectivity through SAS adapters The internal IO subsystem on the Power

pcie 4 gpu in pcie 3 slot If everything is working fine, then you should not change these settings Gen1, Gen2, Gen3 refers to PCIE , and signalling standards

pcie 4 slot where as this gen 1 and gen 2 is only for troubled slot not able to run gen-3 and needs to be down grade to gen 1 or 2? may be I should go home