HP ProBook 6550b HP ProBook 6455b, 6555b, 6450b,and 6550b Notebook PCs - Maint - Page 37

Left-side components - no sound from headphones

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Left-side components NOTE: Refer to the illustration that most closely matches your computer. item Component (1) Vent (2) DisplayPort (3) USB ports (3) (4) ExpressCard slot (5) Audio-in (microphone) jack (6) Audio-out (headphone) jack Description 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. Connects an optional digital display device such as a high-performance monitor or projector. Connect optional USB devices. Supports optional ExpressCards. 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. NOTE: When a device is connected to the headphone jack, the computer speakers are disabled. Left-side components 29

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Left-side components
NOTE:
Refer to the illustration that most closely matches your computer.
item
Component
Description
(1)
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.
(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)
ExpressCard slot
Supports optional ExpressCards.
(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.
NOTE:
When a device is connected to the headphone
jack, the computer speakers are disabled.
Left-side components
29