M1 MacBook Air vs traditional laptops: Soldered NAND kills upgradeability

The M1 MacBook Air solders its NAND flash directly to the board with no removable SSD or M.2 slot, locking you into the storage you buy at purchase. Every Apple Silicon Mac since has copied this design, so if you need more space later, you’re out of luck — unlike most Windows laptops that let you swap drives.