Apple 45W MagSafe MD592B/A Apple 45W MagSafe MD592B/A Macbook Laptop Charger Air 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. more info Apple 45W MagSafe MD592B/A In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection.
