Dell Latitude C540 - Manual (Page 142)

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 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 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 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, 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 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,
and can radiate radio frequency energy and, if not installed and used in accordance with the manufacturer's
instruction manual, may cause harmful interference with radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference, in which case you will be required to correct the
interference at your own expense.
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 generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the manufacturer's instruction manual, may cause