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MY BOOK ESSENTIAL 
USER MANUAL
APPENDIX – 54
Appendix
This appendix includes the following topics: 
Regulatory Compliance
FCC Class B Information
This device 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 unit 
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. However, there is no guarantee that interference will not occur in a particular 
installation. Any changes or modifications not expressly approved by WD could void the 
user's authority to operate this equipment.
ICES/NMB-003 Compliance
Cet appareil de la classe B est conforme à la norme NMB-003 du Canada.
This device complies with Canadian ICES-003 Class B.
Safety Compliance
Approved for US and Canada. CAN/CSA-C22.2 No. 60950-1, UL 60950-1: Safety of 
Information Technology Equipment.
Approuvé pour les Etats-Unis et le Canada. CAN/CSA-C22.2 No. 60950-1 : Sûreté 
d'équipement de technologie de l'information.
This product is intended to be supplied by a listed limited power source, double 
insulated, or direct plug-in power unit marked “Class 2.”
CE Compliance For Europe
Marking by the CE symbol indicates compliance of this system to the applicable Council 
Directives of the European Union, including the EMC Directive (2004/108/EC) and the 
Low Voltage Directive (2006/95/EC). A “Declaration of Conformity” in accordance with 
the applicable directives has been made and is on file at Western Digital Europe.
GS Mark (Germany only)
Machine noise - regulation 3. GPSGV: Unless declared otherwise, the highest level of 
sound pressure from this product is 70db(A) or less, per EN ISO 7779. 
Maschinenlärminformations-Verordnung 3. GPSGV: Der höchste Schalldruckpegel 
beträgt 70 db(A) oder weniger gemäß EN ISO 7779, falls nicht anders gekennzeichnet 
oder spezifiziert.