Use an extra adapter for home or work. Apple's innovative AC adapter is made specifically for your previous generation 13.3-inch MacBook and 13-inch MacBook Pro. The 60 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.