Question SSD install

[garybly]

I just bought an Aorus Z790 Master MB and RTX-4070 GPU. Can I install ssd in M2C_CPU or M2A_cpu slots Or should I use one of the other 3? I know not to use M2C, Not sure about M2A.

 

[USAFRet]

I just bought an Aorus Z790 Master MB and RTX-4070 GPU. Can I install ssd in M2C_CPU or M2A_cpu slots Or should I use one of the other 3? I know not to use M2C, Not sure about M2A.

What specific drive, and what is unclear in the user manual for the motherboard?