NVME M2 drives: which slot to use?

NVME M2 drives: which slot to use? m2 slot types Two types of SSD Note: SSDs using the PCIe x4 bus use M-keys since it is the only one that supports PCIe x4 lanes m24 slot When looking at different types of SSDs, you may have come across terms like NVMe, PCIe, and Fundamentally, the distinctions among

m24 slot Two types of PCIe slot on an Asus H81M-K motherboard Various slots on a computer motherboard, from top to bottom: PCI Express x4; PCI Express x16; PCI Express

m2 sata slot Two types of SSD Note: SSDs using the PCIe x4 bus use M-keys since it is the only one that supports PCIe x4 lanes  I'm now inclined to think the slot is not backwards compatible with SATA drives (or at least I can't find anyone in the Dell community