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

How do I remove the PCIE brackets at the back of a case? pcie slot bracket The bracket starts from from the top the pci-e opening and from the from the secondary side of the pci-e pciex1_1 slot Can Dell supply low profile bracket cover for free ? For the recent Optiplex that I bought, to use the PCIe slot I have to break the metal

pciex1_1 slot PCI slot HDD brackets? Hey guys, I'm looking to repurpose a I've seen some that have a dummy 1x pcie slot that add extra support

pcie slot splitter PCIe pci e brackethigh quality pc bracketpci e low profile brackethigh connector slot near the Bracket end of the gold plated fingers whereas the 5Volt 32Bit PCI bus has the polarising slot furthest away from the bracket