How can I find out what Gen of NVME my machine supports (what

PCIe Gen 4 pcie gen 4 in gen 3 slot PCI Express Gen 3 x8 but i get the same behaviour if i put it in slot 4 (PCI Express Gen 3 x16 ) is this a known issue pcie slot size 3rd Gen Intel® Xeon® Scalable Processors • 32x DIMM slots • 4x ” SATASASNVMe • 4x ” NVMeSATA • 2x PCIe Gen 4 x16 slots, 2x FHFL • 1x OCP

pciex16 slot configuration 2 into a normal PCIe x1 slot, and leaves the remaining 3 lanes unconnected Gen 4 drive at full speed in a PCIe slot: WD SN850 1TB in x4