Tiny model https://www.youtube.com/watch?v=ZnjVSvGMtSE

Shows an 2.5" drive bay good for an internal SSD.

There is a M.2 2280 slot on this model

Until you have it and open it, you wont know if the 256 GB drive that comes with it is an SATA (more likely) or M.2 type. Whatever it is, you'll want to get the larger drive for the other type