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Rear component
Component Description
Vent Enables 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.
Right-side components
NOTE: Your computer may look slightly different from the illustration in this section.
Component Description
(1) Optical drive light Blinking: The optical drive is being accessed.
(2) Optical drive Reads optical discs and, on select models, also writes to optical
discs.
(3) USB ports (2) Connect optional USB devices.
(4) RJ-11 (modem) jack (select models only) Connects a modem cable.
(5) Power connector Connects an AC adapter.
16 Chapter 2 External component identification