Before replacing a PCI Express card, check if any cables are connected to the PCI Express card you want to replace. If yes, remove them before the replacement. Next, press the lever of the PCI Express card. Pull it down and pull out the PCI Express riser with the faulty card.
Insert a new PCI Express riser into the module and use the white lever to fully insert the riser into the chassis. Reconnect the customer cable to its original position.