Hi
I believe you can use a m.2 SSD enclosure to make your m.2 into a form of external storage!
Here’s a video that shows you how to do it and explains it really well!
[link|https://m.youtube.com/watch?v=W_uFdOIOb9I|https://m.youtube.com/watch?v=W_uFdOIOb9I|new_window=true]
I would check which SSD is faster(the one in your computer or your new one)and out the faster one in your computer as it could better use the SSD to achieve better speeds than having it externally
Hopefully this helps
Any questions please ask
Thanks:-)