🎄♥Compatible with all Mac Book Air 11" / 13" (note:except 2012 Mac book with Retina Display or T-Shape) | 🎄♥Parameter: electric power: 45W; Input: AC 100-240v-1.5a, 50-60Hz; output: DC 14.5V-3.1a(45W L-Tip) | 🎄♥Fully compatible:Compatible with Mac Book air(13 inch, Mid 2011),Compatible with Mac Book air(11 inch, Mid 2011), Compatible with Mac Book air(13 inch, Late 2010),Compatible with Mac Book air(11 inch, Late 2010), Mac Book air(13 inch Mid 2009), Compatible withMac Book air(13 inch, Late 2008), Compatible withMac Book air(13 inch, early 2008). part Number: A1237 A1244 A1304 A1369 A1370 A1374 (45W L-Tip) | 🎄♥Replacement chargers manufactured with the highest quality materials and include multiple smart features safeguarding against IV - incorrect voltage, SC - short circuit, IO - internal overheating . CE/FCC/RoHS certified | 🎄♥ADVANCED TECHNOLOGY:Our charger delivers the optimum, high-speed charge to your laptop. Using our 45W Mag 1 Power Adapter ensures a full recharge is completed in a shorter time compared to other cheap products. The Laptop Power Adapter is a combination of multiple safety features that work together to provide ultimate protection for your devices and most importantly, for you!