What is m2_1 and m2_2 storages?

[modeonoff]

Hello, some motherboards support one m2_1 and one m2_2 storage. What is that?

In the case of Samsung Evo 960 Pro nvme m2., is it m2_1 or m2_2? There is no description.

 

[Barty1884]

M2_1 and M2_2 are likely just the labelling for which slot on the motherboard is which.
Drives are not distinguished between with that kind of labelling. Drives are either NVMe/PCIe or SATA...and can different in lengths.

For example, on a Ryzen board, one slot is direct to the CPU and is PCIe Gen3 x4 (=M2_1).
The second slot is to the chipset, typically can accommodate PCIe Gen2 x4 speeds OR a SATA-based drive (and would be labelled M2_2).

 

[camieabz]

It's just that there are two m.2 slots, labelled 1 & 2. The mobo manual will tell you if either slot has shared resources.

 

[modeonoff]

Thanks. No wonder why I cannot find a photo of the two via googling.