HP ProBook 6440b HP ProBook 6545b, 6540b, 6445b and 6440b Notebook PC - Mainte - Page 30
Left-side components - microphone
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Left-side components ✎ Refer to the illustration that most closely matches your computer. External component identification 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. ✎ 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. ✎ When a device is connected to the headphone jack, the computer speakers are disabled. Maintenance and Service Guide 2-15