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Item Component Description
1 WWAN antennas (2)* Send and receive wireless signals to communicate
with WWANs (select models only).
2 WLAN antennas (2)* Send and receive wireless signals to communicate
with WLANs (select models only).
3 Webcam light On: The webcam is in use.
4 Webcam Records audio and video and captures still
photographs.
5 Keyboard light and button Opens and turns on the keyboard light, which
illuminates the keyboard in low-light conditions.
6 Internal microphones (2) Record sound.
8 Chapter 2 External component identification