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2–12 Maintenance and Service Guide
External component identification
Right-side components
Left-side components
Item Component Description
(1) Smart card reader Supports optional smart cards and Java™ cards.
(2) Upgrade drive bay Supports an optical drive or a hard drive.
(3) eSATA/USB combo port Connects an optional high-performance eSATA component, such as a
external mass-storage device, or connects an optional USB device.
(4) RJ-45 (network) jack Connects a network cable.
(5) RJ-11 (modem) jack Connects a modem cable.
Item Component Description
(1) Vent Enables airflow to cool internal components.
✎
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.
(2) USB ports (3) Connects an optional USB devices.
(3) 1394 port Connects an optional IEEE 1394 or 1394a audio/visual device, such as a
camcorder.
(4) ExpressCard slot Supports optional ExpressCard/54 cards.
(5) Audio-in (microphone) jack Connects an optional computer headset microphone, stereo array
microphone, or monaural microphone.
(6) Audio-out (headphone) jack Produces sound when connected to optional powered stereo speakers,
headphones, ear buds, a headset, or television audio
✎
When a device is connected to the headphone jack, the computer
speakers are disabled.