INPUT: AC 100-240V, 50-60Hz; OUTPUT: DC 18.5V-4.6A;Second generation of power adapter,The T-tip connector. Not applicable to Mac Book after 2017! Replacement charger AC adapter for Mac Book Pro 15" Between 2012-2015with model :A1398；Mac Pro 13" after 2012 with model:A1425、A1502;Repalce a1424 charger Compatible with Mac Pro 15 inch：MJLU2,MJLT2,MGXC2,MGXA2,ME293,ME294, ME664,ME665,MC975,MC976；Mac Pro 13 inch：MD212,MD213,MD662,ME864,ME865.ME866,MGX72,MGX82,MGX92,MF839,MF840,MF841,MF843 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. WARRANTY: Service: after sales 24 hours online, if you have any questions, you can contact us and solve them for you at the first time 85W