Two types of SSD: Differences between SATA & NVMe

2 slot is a type of expansion slot found on modern motherboards that is primarily used for connecting solid-state drives These slots are

2 SATA SSDs have two slots in the interface connector, while PCIe SSDs have only one slot in the interface connector Non-Standard PCIe SSDs

m2 pcie 40 in 30 slot The designation simply refers to a form factor for an SSD, and it is not inherently better than other types of SSDs like SATA or PCIe

m2 slot screw 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