Compatible Models - Input: AC 100 - 240V~1.5A 50-60Hz, Output: DC 18.5V-4.6A 85W Compatible with MacBook Pro 85W Mag 1 Macbook Pro 15 and 17 inch Mac Book Pro laptops(before 2012). Mac Book Pro (13-inch, Mid 2012), Mac Book Pro (13-inch, Late 2011), Mac Book Pro (13-inch, Early 2011), Mac Book Pro (13-inch, Mid 2010), Mac Book pro(13-inch, Mid 2010), Mac Book pro(13-inch, Late 2009) Compatible with Mac Air 11inches 13.3inches and 15ches - part Number: A1344A1343, A1330A1342A1172A1181A1184A1211,A1212,A1222, A1244A1226, A1229,A1278A1286,A1297,A1330MD101LL/A,MA538LL / A661-0443661-4269661-4485661-4259661-4339 LED LIGHT PROVIDES STATUS INFO: An amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. Service: customer service can solve the problem online 24 hours a day. If there is a problem with your charger, we will solve it as soon as possible.