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

What does the X4 mean in an PCIe Gen X4 NVME drive? m 2 slot with pcie x4 lanes Typically, a or drive uses four PCIe lanes I would like to operate or drives with only one or two lanes per drive instead m2 sata slot Generally speaking, the number of lanes supported by a PCIe device is represented as follows: x4 means 4 lanes, and x8 means 8 lanes Taking the ADATA

m2 sata slot If two SSDs are installed in a “Dual NVMe PCIe adapter” and the adapter is plugged in either PCIe slot2 or slot7

m2 vs nvme slot Default is using 4 lanes but SSD will also work in x2 mode But with slower data transfer speeds But do not be confused with PCI So basically, I keep hearing that NVMe cards need 4x PCIe lanes But then I keep seeing posts saying that they can run at 2x lanes