Have passed a lot of time since you asked but, in case you still haven't figure that out the thing is:
m.2 is a factor that establish dimension and type of connection.
This factor is then used by either SATA and PCIe.
Your notebook has a SATA connector, then using it with a PCIe disk will not work.
PCIe disk requires a PCIe bus to work with, and SATA is another type of bus.
That's why it doesn't appear in the system.
Regards,
Willkane.