Trivia: When did Apple move the screen magnets from the side to the top of Macbook Air/Pro models?

[mac-enthusiast42]

I'm doing some research and am putting this question out to all the Mac trivia/history buffs on the forum.

You may know that at some point in Macbook history, Apple moved the "sleep-inducing" magnets from the side to the top of the screen. Here's proof the side magnets existed! https://forums.macrumors.com/threads/mbp-has-a-magnet-inside-the-screen.354919/

I'd like to know what model was responsible for the "up"-grade, and even better if you know why they did it?

 

[DeltaMac]

I can't say when the magnet may have moved from the side to the top, but probably an engineering change when Apple moved to the unibody design.
I don't have a clue why Apple does a variety of things. But, in moving a magnet to a different location - likely a simpler idea to include the magnet in the same assembly with the iSight camera/microphone. That must also mean that the trackpad assembly also has the sleep sensor? (I don't know)

 

[mac-enthusiast42]

Thanks for the reply DeltaMac, it makes sense to me to just place the magnets on the same edge as the camera to just have everything in one place. It might also help produce a better "snap" effect when you move the lid.

Anyone know what model they made the change? Or have an old Mac they can verify with?