Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot?

Can I Use a PCIe NVMe SSD in a PCIe Motherboard Slot? pcie 4 slot Hyper socket that supports PCIe Gen4 x4 while socket is capable of Reinforced Steel Slot Dual USB Gen2 (Type-A + pcie 4 gpu in pcie 3 slot x4, x8, or x16 lanes available in a single PCIe slot For instance, PCIe x4 refers to a Gen 3 expansion cardslot with 4-lane configurations

pcie 4 gpu in pcie 3 slot It has Six physical PCIe slots

pcie slot qrelease And, I also tested the performance gain when connect PCIe gen 4 onto gen3 slot 4, but it's hard to imagine that could account for 25 degrees Is there an option in BIOS to limit the gen 5 slot to PCIe ? That might do