45W MacBook Magsafe power adapter specification

Input: 100-240V 50/60Hz
Output: 14.5V, 3.1A 45W
Connector Type: L-Shaped Magsafe 1 Magnetic
Warranty: 6 Months

Apple Parts #: A1237, A1244, A1269, A1270, A1304, A1369, A1370, A1374.

Compatible with:
45W replacement charger for MacBook Air 11-inch and 13-inch Before Mid-2012.

Note: This is the first generation of power adapters.
Compatible with
MacBook Air 11 inch and 13 inches:
MacBook Air (13 inches, mid-2011)
MacBook Air (11 inches, mid-2011)
MacBook Air (13 inches, late 2010)
MacBook Air (11 inches, late 2010)
MacBook Air "Core 2 Duo" 1.6 13" (Original)
MacBook Air "Core 2 Duo" 1.8 13" (Original)
MacBook Air "Core 2 Duo" 1.6 13" (NVIDIA)
MacBook Air "Core 2 Duo" 1.86 13" (NVIDIA)
MacBook Air "Core 2 Duo" 1.86 13" (Mid-09)
MacBook Air "Core 2 Duo" 2.13 13" (Mid-09)
MacBook Air "Core 2 Duo" 1.4 11" (Late '10)
MacBook Air "Core 2 Duo" 1.6 11" (Late '10)
MacBook Air "Core 2 Duo" 1.86 13" (Late '10)
MacBook Air "Core 2 Duo" 2.13 13" (Late '10)
MacBook Air "Core i5" 1.6 11" (Mid-2011)
MacBook Air "Core i7" 1.8 11" (Mid-2011)
MacBook Air "Core i5" 1.7 13" (Mid-2011)
MacBook Air "Core i7" 1.8 13" (Mid-2011)
MacBook Air "Core i5" 1.6 13" (Edu Only)

What's in the box
1 x Replacement MacBook Laptop Charger