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Component Description
(8) Volume up light Blinking: The volume up button is being used to increase speaker
volume.
(9) Num lock light On: Num lock is on or the embedded numeric keypad is enabled.
Buttons and switches
Component Description
(1) Internal display switch Turns off the display if the display is closed while the power is on.
(2) Volume mute button Mutes and restores speaker sound.
(3) Volume down button Decreases computer volume.
(4) Volume up button Increases computer volume.
4 Chapter 1 Features