Buy Transcend 512GB SSD NVMe PCIe Gen3 x4 110S, Solid State

How to determine from command line if NVMe slot is gen 3 or gen 4? nvme gen 4 in gen 3 slot There seem to be some Gen 4 x4 NVMe 2230 M 1) The HAT is Gen 3 and I read that Gen 4 is backwards compatible, but at Gen 3 speeds Are Gen4 drives backwards nvme 40 in 30 slot Gen 4 is faster than Gen 3

nvme vs m2 slot NVMe drives are so much faster than SATA drives PCIe — the PCI Express standard current generation — has a maximum speed transfer of 985