I don't know yet what I'm going to do, but in any case everyone seems to agree that the SD card solution is not the right one ;-) ...
Thanks to all !
Have you got an M2 slot in your laptop ?
No idea: I'd have to open my computer !
And I'd better leave that to a professional: before you asked and I looked it up on Google, I didn't even know what an M2 slot was 😊!)
Thanks for alerting me to this point though!