APPLE | 85W MagSafe Power Adapter (for 15- and 17-inch MacBook Pro) | MC556B/CColor White Power (max.) 85 W The 85 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. When the connection is secure, an LED located at the head of the DC connector will light up; an amber light lets you