How do I remove the PCIE brackets at the back of a case?

Slot brackets Installation Maintenance Products pcie slot bracket The DeepCool PCIe Vertical GPU Bracket is designed to adapt the PCI expansion slots of a computer case into a vertical mount for graphics cards pcie cem slot pcie slots and no temp changes lol I do sort of understand why but I just expected a little something from it Yeah bottom fan at pcie slot

pcieslot Slot Bracket for Fans Enables easy mounting of one or two 120mm cooling fans next to the