SN750 PCIe 4x but 5 GTS only

How to determine from command line if NVMe slot is gen 3 or gen 4? m 2 4 0 in 3 0 slot Important: You'll also have to be sure the motherboard actually has a PCI Express slot implemented The chipset is not a guarantee of that, just an m2 slot types 2 standard contains variants with up to four PCIe lanes, one SATA 6 Gbs and or one USB port So it is possible to connect PCIe as well as SATA SSDs

m24 slot NVMe drive will get maximum performance in a pcie 4 slot, but I'm trying to get a sense of how the latest drives perform in pcie 3