HP PROBOOK 4520S, Руководство по техническому обслуживанию и ремонту

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Buttons, switches, and speakers (select models only)
NOTE: Your computer may look slightly different from the illustration in this section.
Component Description
(1) Speakers (2) Produce sound.
(2) Internal display switch Turns off the display if the display is closed while the power is on.
(3) Power button ● When the computer is off, press the button to turn on the
computer.
●
When the computer is on, press the button to shut down the
computer.
● When the computer is in the Sleep state, press the button
briefly to exit Sleep.
●
When the computer is in Hibernation, press the button briefly
to exit Hibernation.
If the computer has stopped responding and Windows shutdown
procedures are ineffective, press and hold the power button for at
least 5 seconds to turn off the computer.
(4) Fingerprint reader (select models only) Allows a fingerprint logon to Windows, instead of a password
logon.
12 Chapter 2 External component identification