45W Magsafe 1 Power Adapter
Use an extra adapter for home or work. Apple’s innovative AC adapter is now even more portable and made specifically for your portable Mac. IMPORTANT: Please see the compatility listing to be sure you are purchasing the correct power adapter for your model and year.
COMPATIBILITY: MacBook Air models from 2008 to 2011 Not compatible with MacBook Pro 13-inch or 15-inch Apple Model# MC747LL/A