Power Button; Power Indicator - Asus C200M Chromebook E-Manual

Touchpad
The touchpad allows the use of multi-gestures to navigate
onscreen, providing an intuitive user experience. It also simulates
the functions of a regular mouse.
NOTE: For more details, refer to the Using touchpad gestures
section in this manual.

Power button

Press the power button to turn your Notebook PC on or off. You
can also use the power button to put your Notebook PC to sleep
or hibernate mode and wake it up from sleep or hibernate mode.
In the event that your Notebook PC becomes unresponsive,
press and hold the power button for about four (4) seconds until
your Notebook PC shuts down.

Power indicator

The power indicator lights up when the Notebook PC is turned
on and blinks slowly when the Notebook PC is in sleep mode.
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Notebook PC E-Manual