US MacBook power supply in Ireland

I'm heading to the states next week and thinking of buying a macbook to bring back to Ireland with me. Is there any problem with the power supply's or are the a univeral voltage.
I know that I'll have to get a different adapter for the plug but is that all?
Mick.

ackd, It will work fine, they are multi-voltage, you will just have to buy a local power supply for your MacBook.
Taken from the spec. page on Apples site:
Electrical and environmental requirements
* Meets ENERGY STAR requirements
* Line voltage: 100-240V AC
* Frequency: 50Hz to 60Hz

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