M.2 slots in Cube

Got my Cube. What slots can I use for the M.2 cards?

m.2 modules will fit in either the motherboard or the bay 7 card. Remember the m.2 slots are NVME so SATA m.2 will not function in these.

Thanks, kind of helps. What slots in Bay 7 card can be used?
Know not all active on the cube.

All should be active. I have used fully populated card on my prototype N100 and Pro