Buttons And Switches - HP EliteBook 2740p User Manual

Component
(8) Volume up light
(9) Num lock light

Buttons and switches

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