Kbase Article of the Week: Mac mini: How to Remove or Install Memory ⇢

The “Late 2014” part of this document is the saddest bit:

Mac mini (Late 2014) does not have user-installable RAM. You can configure the memory in your Mac mini (Late 2014) when you purchase it.

Here’s what it says for the 2018 machine:

To upgrade the memory in your Mac mini (2018), go to an Apple Store or Apple Authorized Service Provider.