About this item INPUT: AC 100-240V, 1.5A 50-60Hz; OUTPUT: DC 14.85V-3.05A. Knowing your specific model is important. Please check carefully before purchasing. Fully Compatible: Replacement charger AC adapter for various Mac Book Air models. Security Assurance: Replacement charger manufactured with high-quality materials and includes multiple smart features safeguarding against over current, over voltage, overload, short-circuit protection, and auto recovery. Magnetic DC Connector: The 45W magnetic power adapter features a magnetic DC connector, helping to guide the plug into the system for a quick and secure connection. If someone should trip over it, the cord disconnects harmlessly. It also helps prevent fraying or weakening of the cable over time. LED Light and Super Long Cable: An amber light indicates charging, while a green light shows a full charge. The 5.6 FT charging cable allows you to charge and work anywhere. The cable can be neatly wrapped around the charger for easy storag