NVMe SSD TO PCIE X1 4X adapter M Key interface card

NVMe SSDs Chapters:

x4 NVMe SSDs directly use PCIe bus protocol, and so can be directly plugged into a full-size PCIe slot using a simple passive adapter But there

nvme 40 in 30 slot  speeds which is not what the question meant, imo Click to Those are just NVMe to PCIe slot adaptors so technically it is

nvme m2 slot The biggest change between PCIe and PCIe is the data transfer rate, or throughput PCIe speed gets an upgrade in the newer iteration