What are the top uses of PCIe x1 Slots?

What are the top uses of PCIe x1 Slots? pcie 8x slot Now, I read somewhere that if you use the top slot, you're giving up 8 PCI lanes shared with the top PCI-E slot So my 4080 would be running pcie slot sizes Now, I read somewhere that if you use the top slot, you're giving up 8 PCI lanes shared with the top PCI-E slot So my 4080 would be running

pcie slot sizes The PCIe x8 Gen3 backplane supports a PCIe Gen3 target cable adapter installed in the OSS target slot and up to one or more PCIe x16 expansion cards

pcie gen 4 in gen 3 slot PCIe Slot Number, CPUPCIe Port, PCIe version, PCIe Slot Size, PCIe Lanes ; 2, DMI2, , x8, x4 ; 3, DMI2, , x4, x2  It means that the motherboard has 16 PCIe lanes and two connectors You can either use one connector and it will connect all sixteen