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What Is The Power Nap Feature In OS X Mountain Lion?

Question:

What happens when Mac is using Power Nap in OS X Mountain Lion?
- Asked by Alan M. July 25th, 2012

Answer:

While using Power Nap, your Mac may update its software. It also syncs Mail, Contacts, Calendar, and other iCloud components. Time Machine is also capable of backing up your Mac during Power Nap.

You can only use Power Nap if you have a Mac laptop with a built-in SSD. This currently only works with the MacBook Pro Retina Display and MacBook Air models from 2011 on.

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