45 Watt Charger 2012 magsafe 2.

Macbook air 11 and 13" magsafe 2. New.

The 45 Watt MagSafe Power Adapter features a magnetic DC connector that ensures your power cable will disconnect if it experiences undue strain and helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection.