Before we get ahead of ourselves, it's worth pointing out that the Mac Studio (M2 Ultra) has a similar storage setup, but custom upgrades are difficult to do: the computer uses Apple 's own bespoke SSDs, you can't just slot in any off-the-shelf replacement.

The Mac mini M4 improves upon what was already a great mini PC with excellent performance, extra ports on both the front and back and a much more capable base model. Its smaller size also makes it a more compelling upgrade that takes up less space on your desk.