M2 Key E

Which slot should I use for my SSD? m2 slot types On your board, only one slot is connected to the chipset, M2_1, so it should be easy to find out which drive is in that bus with HWiNFO64 Two m2 slot 2: one with a B key and one with a M key to PCI-E x4 adapter that can take multiple lengths of drives socket types B+M keyed

m2 pcie 40 in 30 slot 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