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2 External component identification
Display
NOTE: Refer to the illustration that most closely matches your computer.
Component Description
(1) Internal display switch Turns off the display or initiates Sleep if the display is closed
while the power is on.
NOTE: The display switch is not visible from the outside of the
computer.
(2) WLAN antennas (3)* Send and receive wireless signals to communicate with wireless
local area networks (WLAN).
(3) WWAN antennas (2)* Send and receive wireless signals to communicate with wireless
wide-area networks (WWAN).
(4) Internal microphones (2) Record sound.
10 Chapter 2 External component identification