Is SSD support on AMD motherboards causing confusion?

2 drives are “keyed” at one end so as to prevent the end-user from inserting them in an incompatible socket PCIe NVMe drives are 'M' keyed SATA ones,

The bottom SATA SSD is on , which replaced mSATA in new products See mSATA Sockets On the Motherboard Modern desktop PC motherboards have dedicated

m2 pcie 40 in 30 slot *Follow the steps below to install your SSDs if the PCIe slot of your motherboard can read only three SSDs on model list One SSD

m2_1 slot *Follow the steps below to install your SSDs if the PCIe slot of your motherboard can read only three SSDs on model list One SSD