HP ProBook 6555b Notebook-PC - Manual (Page 27)

Component Description
NOTE: To prevent an unresponsive system, replace the wireless
module only with a wireless module authorized for use in the
computer by the governmental agency that regulates wireless
devices in your country or region. If you replace the module and
then receive a warning message, remove the module to restore
computer functionality, and then contact technical support through
Help and Support.
Display components
NOTE: Your computer may look slightly different from the illustration in this section.
Component Description
(1) Internal microphones (2) Record sound.
NOTE: If there is a microphone icon next to each microphone
opening, your computer has internal microphones.
(2) Webcam light (select models only) On: The webcam is in use.
(3) Webcam (select models only) Records video and captures still photographs.
(4) 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.
Identifying hardware 17