Electric Power: 60W; Input: AC 100-240v-1.5A 50-60Hz; Output: DC 16.5V-3.65A Replacement charger AC adapter for Apple MacBook Pro 13 inch (Before Mid 2012) Part Number: A1344, A1330, A1342, A1278, A1185, A1184, A1181. Replacement charger AC adapter forMacBook Pro (13 inch, Mid 2012), MacBook Pro (13 inch, Late 2011), MacBook Pro (13 inch, Early 2011), MacBook Pro (13 inch, Mid 2010), MacBook pro(13 inch, Mid 2010), MacBook pro(13 inch, Late 2009). Part Number: A1344, A1330, A1342, A1278, A1185, A1184, A1181. Note:This is the first generation of magsafe power adapter(L-Shape), not the second generation. 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. Replacement chargers manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . Its held in place magnetically, so if someone should trip over it, the cord disconnects harmlessly and your notebook stays put safely.