P r e f a c e
Class 1 Laser Product
When the product is supplied with optical modules, it contain a laser that complies with Laser Class 1, US 21
QFR (J) & EN 60825-1, UL (NRTL) and TUV.
Caution ! If optical modules are to be provided and fitted by the end user, the modules must be a UL (or
Electronic Emission Notices
Federal Communications Commission (FCC) Class A Statement
IBM is not responsible for any radio or television interference caused by unauthorized changes or
modifications to this product. This product complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this product must not cause harmful interference, and (2) this product must
accept any interference received, including interference that may cause undesired operation.
European Union (EU) Electromagnetic Compatibility Directive
This product conforms with the protection requirements of EU Council Directive 89/336/EEC on the
approximation of the laws of the Member States relating to electromagnetic compatibility. This product has
been tested and found to comply with the limits for Class A Information Technology Equipment according to
European Standard EN 55022. The limits for Class A equipment were derived for commercial and industrial
environments to provide reasonable protection against interference with licensed communication equipment.
This is a Class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
European Community contact:
IBM Technical Regulations
Pascalstr. 100, Stuttgart, Germany 70569
Tele: 0049 (0)711 7851176
Fax: 0049 (0)711 785 1283
People's Republic of China Class A Electronic Emission Statement
other North American NRTL) RECOGNISED COMPONENT, must be approved by TUV (or
other European Product safety test house), and the laser in the module must comply with Laser
Class 1, US 21 QFR (J) & EN 60825-1.
Observe all applicable safety precautions (for example, weight restrictions, handling batteries
and lasers etc.) detailed in the preceding paragraphs when dismantling and disposing of this
product or its components.
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide