HP EliteBook 820 G1, HP EliteBook 725 G2, & EliteBook 720 G1 Notebook PCs - Maintenance and Service Guide

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Item Component Description
(1) Service cover Provides access to the hard drive bay, the WLAN module slot, the WWAN module slot,
and the memory module slots.
CAUTION: 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 support through Help and Support.
(2) Service cover release latch Releases the service cover from the computer. A security screw is available to prevent
the service cover from being accidentally removed.
(3) Vents (2) Enable airflow to cool internal components.
NOTE: The computer fan starts up automatically to cool internal components and
prevent overheating. It is normal for the internal fan to cycle on and off during routine
operation.
20 Chapter 2 External component identification