HP ProBook 6570b Getting Started page 24

Component
(1) Internal display switch
(2) WLAN antennas (2)*
(3) WWAN antennas (2)* (select models only)
(4) Internal microphone(s) (1 or 2 depending on
model)
(5) Webcam light (select models only)
(6) Webcam (select models only)
*The antennas are not visible from the outside of the computer. For optimal transmission, keep the areas immediately
around the antennas free from obstructions. To see wireless regulatory notices, see the section of the Regulatory, Safety,
and Environmental Notices that applies to your country or region. These notices are located in Help and Support.
16 Chapter 2 Getting to know your computer
Description
Turns off the display. Initiates Sleep on units without
accelerometers if the display is closed while DC power is on.
NOTE: The display switch is not visible from the outside of the
computer.
Send and receive wireless signals to communicate with wireless
local area networks (WLAN).
Send and receive wireless signals to communicate with wireless
wide area networks (WWAN)
Record sound.
On: The webcam is in use.
Records video and captures still photographs.
To use the webcam, select Start > All Programs > HP >
HP Webcam.