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2 External component identification
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Item Component Description
(1) WLAN antennas (2)* Send and receive wireless signals to communicate
with WLANs (select models only).
(2) WWAN antennas (2)* Send and receive wireless signals to communicate
with WWANs (select models only).
(3) Internal microphones (2) Record sound.
(4) Webcam light (select models only) On: The webcam is in use.
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