Apple GeoPort Telecom Adapter Kit - Manual (Page 100)

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Communications regulation information
The following information is provided in compliance with US FCC
(Federal Communications Commission) and Canadian DOC
(Department of Communications) regulations.
FCC statement
This equipment has been tested and found to comply with the
limits for a Class B digital device in accordance with the
specifications in Part 15 of FCC rules. See instructions if
interference to radio or television reception is suspected.
Radio and television interference
The equipment described in this manual generates, uses, and can
radiate radio-frequency energy. If it is not installed and used
properly—that is, in strict accordance with Apple’s instructions—it
may cause interference with radio and television reception.
This equipment has been tested and found to comply with the
limits for a Class B digital device in accordance with the
specifications in Part 15 of FCC rules. These specifications are
designed to provide reasonable protection against such
interference in a residential installation. However, there is no
guarantee that interference will not occur in a particular
installation.
You can determine whether your computer system is causing
interference by turning it off. If the interference stops, it was
probably caused by the computer or one of the peripheral devices.