HP ProBook 6540b HP ProBook 6545b, 6540b, 6445b and 6440b Notebook PC - Mainte - Page 31

Smart Card Reader, Connects an optional computer headset microphone, stereo array - no audio

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External component identification Item Component (1) Vent (2) DisplayPort (3) USB ports (3) (4) Smart Card Reader (select models only) (5) Audio-in (microphone) jack (6) Audio-out (headphone) jack Description 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. Connects an optional digital display device such as a high-performance monitor or projector. Connect optional USB devices. Supports optional smart cards and Java™ Cards. Connects an optional computer headset microphone, stereo array microphone, or monaural microphone. 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. 2-16 Maintenance and Service Guide

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2–16
Maintenance and Service Guide
External component identification
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)
DisplayPort
Connects an optional digital display device such as a high-performance
monitor or projector.
(3)
USB ports (3)
Connect optional USB devices.
(4)
Smart Card Reader
(select models only)
Supports optional smart cards and Java™ 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.