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Well, speaking as the friend of a former MacBook owner who had his fried when a local tech plugged in the higher-powered adapter instead of the correct one, I'm struck by the thought that I don't really understand why Apple has taken a "two different adapters" strategy in the first place.

(Up to this point, even I didn't realize the two classes of laptop were differentiated in this way. Hey, I'm just an ignorant PowerBook owner...)

Um, unless I'm tragically mistaken, this story doesn't seem likely. The 60W and 85W Magsafe adapters appear to be the same voltage and pin config, it's just their capacities which are different:

"I already own a MacBook Pro—can I use the power supply that came with it on a MacBook?

If you hold the two power supplies side by side, you’ll notice that the MacBook Pro’s is larger. That’s because the MacBook Pro uses an 85-watt power supply, while the MacBook uses a 60-watt power supply. Apple says you can use the more powerful, 85-watt power supply with a MacBook without any problems, and that in 80 percent to 90 percent of situations, you can use the MacBook’s power supply with the more-demanding MacBook Pro as well. If you’re really taxing the MacBook Pro’s processor with some heavy-duty work, the MacBook’s adapter will still be able to power the MacBook Pro—but it may not have any power left over to charge its battery."

Link:
http://www.macworld.com/2006/05/firstlooks/macbookfaq/index.php

This is an old link, and maybe something's changed, but I find it unlikely that Apple would make two Magsafe adapters with different voltages, either of which could fry out a laptop if plugged into the wrong machine.

Let me know if I'm wrong, though.
 
MacBook Pro Power Adapters, which were previously
backordered for quite a long time, are now in stock
and ship within 24 hours.

Part# is MA938LL/A

It doesn't look like these are new (they are the new smaller ones,
but not the new new ones indicated were coming in this thread).

Any news? Anyone receive one of these recently?
 
Had my addapter replaced as well, but on the G4 (similar design different plug). Honestly my friends PC has a better (smaller) power supply.
 
I just bought 2 power adapters at the Apple store.

85w macbook pro versions. Part# is MA938LL/A

looks like the new models which came in are NOT the smaller variety. instead after the product problems, they reverted back to the larger older model.

lame!
 
I just bought 2 power adapters at the Apple store.

85w macbook pro versions. Part# is MA938LL/A

looks like the new models which came in are NOT the smaller variety. instead after the product problems, they reverted back to the larger older model.

lame!

That's odd, because the one I just purchased from them online was the smaller version. I thought the ones with all the problems were the older, larger ones?
 
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