NEW Replacement MacBook Adapter Charger 45W for Apple MacBook Air A1304 MC506LL/A MC503LL/A
New Compatible Magsafe 1 Charger 45W Replacement for Apple MacBook Air 11" & 13" Made in Late 2008, 2009, 2010, 2011, Model A1237, A1244, A1269, A1270, A1304, A1369, A1370, A1374, A1375
1 x USA plug
Connector for Mac notebooks are available in MagSafe, MagSafe 2 and USB-C; Power adapters are available in 29W, 30W, 45W, 60W, 61W, 85W, and 87W varieties. You should use the appropriate wattage power adapter for your Mac notebook. You can use a compatible higher wattage adapter without issue, but it won't make your computer charge faster or operate differently. Lower wattage adapters don't provide enough power.
How to choose the CORRECT charger: