Apple MacBook Air (11-inch, Mid 2011) - Manual (Page 56)

56 Chapter 4 Last, but Not Least
To reduce the possibility of overheating the power adapter or of heat-related injuries,
do one of the following:
 Plug the power adapter directly into a power outlet.
MagSafe connector AC plug
MagSafe Power Adapter
 If you’re using the AC power cord, place the power adapter on a desk, table, or on the
floor in a well-ventilated location.
MagSafe connector
MagSafe Power Adapter
AC power cord