Input: AC 100-240V 50-60Hz, Output : 14.85V 3.1A 45W. Fully Compatible: MacBook Air (11-inch, Early 2015) ; MacBook Air (13-inch, Early 2015) ; MacBook Air (11-inch, Early 2014) ; MacBook Air (13-inch, Early 2014) ; MacBook Air (11-inch, Mid 2013) ; MacBook Air (13-inch, Mid 2013) ; MacBook Air (11-inch, Mid 2012) ; MacBook Air (13-inch, Mid 2012);Part Number:A1436 A1466 MagSafe 2 T-tip: T-Tip Magnetic 5-pin DC Connector helps guide the plug into the system for a quick and secure connection. And an amber light lets you know that your notebook is charging, while a green light tells you that you have full charge.