According to Apple Portables: Troubleshooting MagSafe adapters, yes, a higher wattage power adapter can be used on a system requiring a lower wattage. So you can use a 60w or 85w power adapter on an Air, which comes with a 45w adapter.
According to Apple Portables: Troubleshooting MagSafe adapters, yes, a higher wattage power adapter can be used on a system requiring a lower wattage. So you can use a 60w or 85w power adapter on an Air, which comes with a 45w adapter.
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