HP EliteBook 840 G2 Notebook PC HP EliteBook 740 G2 Notebook PC HP ZBook 14 G2 Mobile Workstation - Maintenance and Service Guide

Item Component Description
(5) 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.
(6) SIM slot (select models only) Supports a wireless subscriber identity module (SIM). The
SIM slot is located inside the battery bay.
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