Does the retina MacBook Pro Australian charger duckhead have 3 prongs on it or 2?

Posted by frenchglen on Super User See other posts from Super User or by frenchglen
Published on 2012-11-18T16:52:14Z Indexed on 2012/11/18 17:06 UTC
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macbook-pro

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apple

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electricity

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charger

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macbook-pro-retina

I notice that with my Retina MacBook Pro (bought in UK), its charger uses all three prongs to power the laptop (like this, rather than this). Not surprised, it's a powerful machine.

I'm going to Australia now and I want to use an aussie duckhead and make use of the innovative design. I have an existing one from an old iPod (and it used to work with fine with my Macbook Air when in australia), but it's only two prongs (like this).

Is that enough to power my rMBP? Or will it damage/strain it and I need to find a 3 prong one (if it even exists - I haven't bought my MBP in Australia) like this?

Thanks

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