Asus K501U Instruction Manual page 23

Notebook PC E-Manual
Airplane mode indicator
This indicator lights up when the Airplane mode in
your Notebook PC is enabled.
NOTE: When enabled, the Airplane mode
disables all wireless connectivity.
Capital lock indicator
This indicator lights up when the capital lock
function is activated. Using capital lock allows you
to type capitalized letters (such as A, B, C) using your
Notebook PC's keyboard.
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