HP EliteBook 8540w Mobile Workstation - Manual (Page 23)

Display
Component Description
(1) Internal display switch Turns off the display if the display is closed while the power is on.
(2) Internal microphones (2) Record sound.
(3) Webcam light On: The webcam is in use.
(4) Webcam Records audio and video and captures still photographs.
(5) Keyboard light Illuminates the keyboard in low-light conditions when the keyboard
light button is pressed.
(6) Keyboard light button Turns on the keyboard light.
(7) Ambient light sensor Automatically adjusts the display brightness based on the lighting
conditions in your environment.
Wireless antennas (select models only)
The antennas send and receive signals from one or more wireless devices. These antennas are not
visible from the outside of the computer.
Identifying hardware 11