Appendix, Regulatory compliance, Fcc class b information – Western Digital WD Dual-Option USB External Drive User Manual User Manual
Page 26: Csa notice, Underwriters laboratories inc, Ce compliance for europe

WD DUAL-OPTION EXTERNAL USB HARD DRIVE
USER MANUAL
APPENDIX – 22
Appendix
Regulatory Compliance
FCC Class B Information
This equipment has been tested and found to comply with the limits of 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 instructions, may cause harmful interference to radio or television reception, which can be 
determined by turning the equipment off and on, the user is encouraged to try to correct the 
interference by one or more of the following measures:
!
Reorient or relocate the receiving antenna.
!
Increase the separation between the equipment and receiver.
!
Connect the equipment into an outlet on a circuit different from that to which the 
receiver is connected.
!
Consult the dealer or an experienced radio/TV technician for help.
!
Any changes or modifications not expressly approved by the manufacturer could void 
the user’s authority to operate the equipment.
The following booklet, prepared by the Federal Communications Commission, may be 
helpful: How to Identify and Resolve Radio/TV Interference Problems. This booklet is Stock 
No. 004-000-00345-4 available from the US Government Printing Office, Washington, 
DC 20402. 
CSA Notice
Le prent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites 
applicables aux appareils numériques de la classe B préscrites dans le Règlement sur le 
brouillage radioélectrique édicté par le ministère des Communications du Canada.
This digital apparatus does not exceed the Class B limits for radio noise for digital apparatus 
set out in the Radio Interference Regulations of the Canadian Department of 
Communications.
Underwriters Laboratories Inc.
Approved for US and Canada. CAN/CSA-C22.2 No. 60950-1, UL 60950-1. Information 
Technology Equipment - Safety - Part 1: General Requirements (File E101559).
CE Compliance for Europe
Verified to comply with EN55022 for RF Emissions and EN50082-1 for Generic Immunity, 
as applicable.
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