Acer IEEE 802.11b Wireless USB Adapter - Manual (Page 67)

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Regulatory Information
The manufacturer is not responsible for any radio or television
interference caused by unauthorized modification of this device or the
substitution or attachment of connecting cables and equipment other
than specified. The correction of interference caused by such
unauthorized modification, substitution or attachment will be the
responsibility of the user. Built-in antennas, whether installed indoors or
out, should be installed only by experienced antenna installation
professionals who are familiar with local building and safety codes and,
wherever applicable, are licensed by the appropriate government
regulatory authorities.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for
an uncontrolled environment.
This equipment should be installed and operated with minimum
distance 20cm between the radiator & your body.