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Did Apple change the display adapter from MacBook 2006 to MacBook Pro 2010?

I thought they were the same, (similar size) but they actually differ.

Do I have to buy a new adapter?

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up vote 3 down vote accepted

The Output port from early MacBook (and MacBook Pros) was a mini-VGA, later a mini-DVI port and various accessories were available to connect regular size VGA displays. 15" and 17" PowerBooks had full-size DVI outputs as far as I can remember.

Recent MacBook models use a smaller mini DisplayPort. Apple itself offers different adapters to transform the mini DisplayPort into VGA, DVI, or HDMI. If you need a VGA adapter (like you say in your question tag), you are looking for this. If, on the other hand, you need to connect a DVI display, then this is what you want.

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Actually, Martin, the Macbook has never had a full-size DVI port. It has had (in order): mini-VGA, mini-DVI and finally mini-DisplayPort. – Ben Wyatt Oct 13 '10 at 17:13
@Ben Thanks, fixed. – Martín Marconcini Oct 13 '10 at 17:16
@Ben The pro had a full display port at one point, I have one. – bmargulies Oct 13 '10 at 19:50
@bmargulies: Full DVI yes - but never full DisplayPort. – Chealion Oct 14 '10 at 21:30
@Che of course, what was I thinking. – bmargulies Oct 15 '10 at 22:01

Apple laptops have gone through the following display adapter transitions

The MacBooks never had mini VGA, they started with mini DVI, but earlier Apple laptops such as the iBook used mini VGA. Before they featured mini DisplayPort, early MacBook Pros used a full size DVI port.

Note that a Thunderbolt connector is backwards compatible with mini DisplayPort displays and adapters, and looks the same. It may seem as though there's been no transition in 2011, but the Thunderbolt port enables new functionality that mini DisplayPort did not have prior to 2011.

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