In theory, you could use both M2 slots on your new MacBook Pro. However, in practice, it may not be a good idea to do so.
There are a few reasons why.
First, using both M2 slots will severely limit your battery life. If you’re using both slots for storage, your computer will try to use the faster PCIe storage instead of the slower SATA storage.
This can lead to decreased battery life and reduced performance.
Second, using both M2 slots could also cause problems with your computer’s overall performance. If one of the M2 slots is busy processing data, it may be difficult for the other slot to handle tasks smoothly.
This could lead to decreased performance and instability on your computer.
Overall, it may not be a good idea to use both M2 slots on your new MacBook Pro. If you do decide to do so, make sure you have a plan in place for dealing with potential problems that may arise.