HP ProBook 5220m Notebook PC - Manual (Page 21)

Display components
Component Description
(1) Internal display switch Turns off the display and initiates Sleep if the display is closed while
the power is on.
(2) Internal microphone Records sound.
(3) Webcam light (select models only) On: The webcam is in use.
(4) Webcam (select models only) Records audio and video and captures still photographs.
Wireless antennas
Your computer has at least two antennas that send and receive signals from one or more wireless
devices.
Identifying hardware 9