They both take place in the MacBook’s battery bay. One of them is the installation of RAM, which is a new procedure that involves two little lever arms. The other is the MacBook’s hard drive, which actually resides in the far left corner of the battery bay! As a result, the MacBook is probably the most easily upgradeable Mac laptop ever.
But perhaps it would be easier to show you what I’m talking about. So I made a video taking you beneath the battery bay! (Click on the play button below to play the video, hosted by YouTube.)
I hope that clears some things up. (YouTube — it’s not just for copyright infringement anymore!) If you’ve got other questions, feel free to ask them in the comments attached to this story. We’ll be posting a comprehensive MacBook FAQ later this week.