used Apple 60W MagSafe 2 Power Adapter for MacBook Pro with Retina Display MD565LL/A

The 60W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it the cord disconnects harmlessly and your MacBook Pro stays put safely. It also 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 lights up; an amber light lets you know that your notebook is charging while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length while the AC wall adapter also provided gives you an even easier and more compact way to travel.