Apple MacBook Air (13-inch, Mid 2011) - Manual (Page 57)

57 Chapter 4 Last, but Not Least
Disconnect the power adapter and disconnect any other cables if any of the following
conditions exists:
 You want to clean the case (use only the recommended procedure described on
page 60).
 The power cord or plug becomes frayed or otherwise damaged.
 Your MacBook Air or power adapter is exposed to rain, excessive moisture, or liquid
spilled into the case.
 Your MacBook Air or power adapter has been dropped, the case has been damaged,
or you suspect that service or repair is required.
The MagSafe power port contains a magnet that can erase data on a credit card,
iPod, or other device. To preserve your data, do not place these or other magnetically
sensitive material or devices within 1 inch (25 mm) of this port.
If debris gets into the MagSafe power port, remove it gently with a dry cotton swab.
MagSafe power specifications:
 Frequency: 50 to 60 Hz, single phase
 Line Voltage: 100 to 240 V
 Output Voltage: 14.5 V DC, 3.1 A