HP Laptop User Manual page 30

Component
(5)
(6)
18 Chapter 2 Getting to know your computer
Vents (2)
SIM slot (select models only)
Description
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.
Supports a wireless subscriber identity module (SIM).
The SIM slot is located inside the battery bay.
ENWW