If necessary, consult a Dell Technical Support representative or an experienced radio/television technician
for additional suggestions.
Dell computers are designed, tested, and classified for their intended electromagnetic environment. These
electromagnetic environment classifications generally refer to the following harmonized definitions:
Class A is typically for business or industrial environments.
Class B is typically for residential environments.
Information Technology Equipment (ITE), including peripherals, expansion cards, printers, input/output (I/O)
devices, monitors, and so on, that are integrated into or connected to the computer should match the
electromagnetic environment classification of the computer.
A Notice About Shielded Signal Cables: Use only shielded cables for connecting
peripherals to any Dell device to reduce the possibility of interference with radio
communications services. Using shielded cables ensures that you maintain the
appropriate EMC classification for the intended environment. For parallel printers, a
cable is available from Dell. If you prefer, you can order a cable from Dell on the World
Wide Web at http://accessories.us.dell.com.
Most Dell computers are classified for Class B environments. However, the inclusion of certain options can
change the rating of some configurations to Class A. To determine the electromagnetic classification for your
computer or device, refer to the following sections specific for each regulatory agency. Each section provides
country-specific EMC/EMI or product safety information.
FCC Notices (U.S. Only)
Most Dell computers are classified by the Federal Communications Commission (FCC) as Class B digital
devices. To determine which classification applies to your computer, examine all FCC registration labels
located on the bottom or back panel of your computer, on card-mounting brackets, and on the cards
themselves. If any one of the labels carries a Class A rating, your entire computer is considered to be a
Class A digital device. If
all
labels carry an FCC Class B rating as distinguished by either an FCC ID number
or the FCC logo (
), your computer is considered to be a Class B digital device.
Once you have determined your computer's FCC classification, read the appropriate FCC notice. Note that
FCC regulations provide that changes or modifications not expressly approved by Dell could void your
authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired
operation.
Class A
This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment. This equipment generates, uses,
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