SSD upgrade on a Samsung Galaxy Flex 2 5G (not possible)

Seems that the Notebook uses not a standard 2280 m.2 SSD but instead a much smaller one (maybe 2230). I just wanted to install a Samsung 980 Pro on my exemplar but aborted the operation.

The SSD is above the Battery in the middle.

The SSD is under the Metal Frame in the Middle above the Battery.

Btw.: Disassembly is pretty easy: Just remove 4 screws and use a suction cup on the front corner on the bottom (not on back side at hinge area which seems to be much stronger).