Type-C Thunderbolt 3 to PCI Express PCI-E SSD Nvme NGFF M-key

What does the X4 mean in an PCIe Gen X4 NVME drive? pci 4 ssd in pci 3 slot PCI Express Gen Bandwidth per line +------------------+------------------------------------+ PCIe Gen1 pcie 40 in pcie 30 slot Gen 4 is faster than Gen 3

pcie 4 slot A PCIe NVMe SSD will work in a PCIe motherboard slot at PCIe speeds PCI-Express versions are backward compatible, meaning that you can use a