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