Apple posted a support document which details the Power Nap feature of OS X Mountain Lion, noting "an SMC update is required to gain all the functionality" with this hot new feature. For now, there are only three MacBook models supported -- and for one of them, the feature is still MIA.
The mid-2011 and mid-2012 MacBook Air models received the required SMC update on Wednesday night, so users who have updated to OS X Mountain Lion can begin taking advantage of the operating system's stealth-like features, even while the notebook is asleep.
So what gets done while a notebook is Power Napping? Ironically, almost everything. The support document details an extensive list that at first glance might have you believing the Mac isn't going to sleep at all, which includes receiving new messages in Mail, new invites or calendar updates in Calendar, changes made elsewhere in Contacts, Reminders or Notes and even Photo Stream updates.
Apple claims that Power Nap is even more impressive while your Mac notebook is plugged into AC power, where it's also capable of downloading software updates, making backups via Time Machine, performing Spotlight indexing and even updating Help Center.
About the only bad news in this support document is that the swanky new 15-inch MacBook Pro with Retina Display has no required SMC update available -- at least not yet. It's still listed as "coming soon," but given how busy Apple has been this week, we can probably forgive them for being tardy on this one thing.
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Tags: NewsFirmwareMacmacbook airMacBook Pro with Retina Displaynew featuresOS X Mountain LionPower NapSMC Here's What You'll Get:The latest Apple news, reviews and how-tosThe hottest articles from MacLife.comYour recommended daily dose of awesome Also, send me e-mail announcements and special offers from Mac
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