Q: Power Adapter / Magsafe A1222 also compatible with Macbook Pro 15" (2011) or is that a Problem, because normally it was used with ... more
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Feb 24, 2016 4:03 AMby OGELTHORPE,Some Poweradapter compatibility rules.
A Magsafe2 power adapter is not compatible with older MBPs (non retina)
Older Poweradapters (plain Magsafe) need an adapter to work on a retina MBP.
You may safely use a Poweradapter of the same wattage or greater for what is specified for a given MBP.
Ciao.
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Feb 24, 2016 4:08 AMby John Galt,You can use that power adapter. No problem.
In all cases if it is an Apple branded power adapter, and its MagSafe adapter fits in your Mac's power port, it will work. The A1222 is the 85W adapter and will charge all MacBook Pro models, even those that included a lower power adapter. It won't charge any faster though.
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Feb 24, 2016 4:13 AMby KimUserName,This technote may help. Find the right power adapter and cord for your Mac notebook - Apple Support
Kim
