Using a PCIe x1 card in a PCIe x16 slot

What can I do with a PCI-E x1 slot? ard pci 1 slot 1 8+4 Solid Pin CPU Power Connector ; 2 Twin 14+2+1 Digital VRM Design ; 3 Advanced Thermal Design ; 4 Design Ready for PCI Express ; 5 EZ-Latch pcie 4 ssd in pcie 3 slot Mini-tower computer with 1 PCI, 3 PCIe slots Up to 2 COM Ports and 12th Gen Alder Lake, supports Windows 10 and 11

pcie x16 expansion slot PCI slot 3 supports a 24-lane PCI bus This bus can be bifurcated using the slot 3 PCI cable assembly into 1 Gen3 x16 slot and 1 Gen3 x8 slot The Gen3 x8 slot