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Appendix 109
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 devices, 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 devices to
any Dell device to reduce the possibility of interference with radio communications
services. Using shielded cables ensures that you maintain the appropriate Electromagnetic
Compatibility 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 accessories.us.dell.com/sna/category.asp?category_id=4117.
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, see the following sections specific
for each regulatory agency. Each section provides country-specific Electromagnetic
Compatibility/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, side, 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 B
This equipment has been tested and found to comply with the limits for a Class B digital
device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment