Component
(6)
Locating the serial number, product number, and model number
The serial number, product number, and model number of your computer are located on the rear of the
computer. You may need the information when you travel internationally or when you contact support.
20
Chapter 2 External component identification
SIM slot (select models only)
Description
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.