When I thought about expanding my Acer Swift 1's (Model # SF113-31) storage, it seemed very weird to me that there was a maximum storage size and, moreover, that that maximal size was (the ridiculous amount of) 256 Gb. I took a risk and bought a 512 Gb M.2 2280 SSD card. It works as it comes, without any necessary software modification. So I wanted to make the people who are in doubt know that yes, it accepts storage cards bigger than 256 Gb. For instance, the one I bought is a Western Digital Blue Sata 3D 500 Gb M.2 2280.
Feel free to add any other SSD card model you confirm that is compatible too (I guess most if not all SATA III 512 Gb are).