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.

Apple has returned to using two 128GB storage chips in the new Mac mini with 256GB of storage, according to a partial teardown video shared on

On X, L0vertodream also posted on X a Mac mini teardown. L0vetodream states that “it is indeed a 1-slot dual-slot with a maximum particle size of 1TB. It uses a BGA315 hard disk and the maximum upgrade capacity can be up to 2T” (translated).