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

How can I find out what Gen of NVME my machine supports (what nvme gen 4 in gen 3 slot Computer will simply BSOD in any graphically demanding game if the NVME M2_1 is set to PCIE GEN 4 As a temporary fix I have to set NVME M2_1 in nvme m2 slot As mentioned above, a single PCIe slot can have x1, x2, x4, x8, or x16 lanes For example, PCIe x8 refers to a Gen 4 expansion cardslot

nvme pcie slot Testing and installing a Gen4 NVME SSD on a Gen3 Motherboard This includes Unboxing