Asus UX392 E-Manual page 17

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 at least 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.
Fingerprint sensor
This built-in fingerprint sensor captures your fingerprint and uses
it as biometric authentication for logging on to your Notebook
PC's system.
Notebook PC E-Manual 17