Can i use appnap if i upgrade my 2012-15 (non retina) to sdd?
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Power Nap requires a special firmware to work. That firmware is only available for the MacBook Pro with Retina display and Late 2010 and newer MacBooks Air, so if you install a SSD on the MacBook Pro, you won't get Power Nap
It has nothing to do with the change to SSD. Read Mende's post.
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