HP ProBook 4330S Notebook-PC - Manual (Page 22)

Display
Component Description
(1) Speakers (2) Produce sound.
(2) Internal display switch Turns off the display or initiates Suspend if the display is closed
while the power is on.
NOTE: The display switch is not visible from the outside of the
computer.
(3) WWAN antennas (2)* (select models only) Send and receive wireless signals to communicate with wireless
wide-area networks (WWAN).
(4) WLAN antennas (2)* Send and receive wireless signals to communicate with wireless
local area networks (WLAN).
(5) Internal microphone(s) (1 or 2 depending on
model) Record sound.
(6) Webcam light (select models only) On: The webcam is in use.
(7) Webcam (select models only) Records video and captures still photographs.
*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, refer to the section of the Regulatory, Safety,
and Environmental Notices that applies to your country or region.
12 Chapter 2 Getting to know your computer