HP Compaq Series Hardware Manual page 16

Component
5
Speakers (2)
6
Wireless antennae (2)
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WARNING: Exposure to Radio Frequency Radiation
The radiated output power of this device is below the FCC radio
frequency exposure limits. Nevertheless, the device should be
used in such a manner that the potential for human contact during
normal operation is minimized. To avoid the possibility of
exceeding the FCC radio frequency exposure limits, human
proximity to the antenna should not be less than 20 cm (8 inches)
during normal operation, including when the notebook display is
closed.
Hardware Guide
Notebook Features
Description
Produce system sound.
Transmit wireless data.
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