I recently purchased Swift 1 with N5000, 4GB RAM. (Model# : SF114-32-P2PK)
I did read every single question/answer/discussion posts up regarding this specific model on Acer community, and realized that there are many questions, asking if they could use M.2 slot as an additional storage unit. I've found answers like the link below, but haven't found a successful story with NVMe.
The one who answers the post refers to official lists of compatible SSD which I can't find from anywhere. I would very much like to have proof of its NVMe compatibility before I purchase one, so I don't mess up with my new laptop.