What does the X4 mean in an PCIe Gen X4 NVME drive?

It utilizes the onboard PCIe interface to transfer data rather than traditional SATA connections Unlike typical SATA connections, NVMe is

The card physically has an X4 interface, so it could be plugged into an X4, X8, or X16 slot It can still physically only access 4 lanes (else

pcie 4 in pcie 3 slot It's a slot of x16 size but electrically x4

pcie 20 x1 slot PCIe SSDs, on the other hand, connect directly to the PCIe slot and are smaller in size, enhancing speed and performance In 2008 PCIe SSDs