3Com NETBuilder II Installing Instruction page 3

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The NETBuilder II chassis are supplied in the United Kingdom under the General Approval
Number NS/G/1234/J/100003 and do not hold a BABT license in their own right. In view of this,
users are reminded that when the HSSI module is installed in a chassis, it is still only the module
that is approved and so the BABT license label must not be moved so that it is attached to the
chassis itself.
The network connector HSSI is a TNV connection point as defined by EN 41 003. The bus
connectors J1, J2, and J3 are SELV connections as defined by EN 60 950.
Changes or modifications not expressly approved by 3Com could void the user's authority to
operate this equipment.
France and Peru Only
This unit operates under SELV conditions (Safety Extra Low Voltage) according to IEC 950, the conditions
of which are maintained only if the equipment to which it is connected is also operational under SELV.
This unit cannot be powered from IT* supplies. If your supplies are of IT type, then this unit should be
powered by 230V (2P+T) via an isolation transformer ration 1:1, with the secondary connection point
labeled neutral, connected directly to earth (ground).
* Impedance à la tierre
Electromagnetic Compatibility Information
Classes
Various national agencies (in the United States, The Federal Communications Commission (FCC) govern
the levels of electromagnetic emissions from digital devices. Electromagnetic emissions can interfere with
radio and television transmission. To reduce the risk of harmful interference these agencies have
established requirements for manufacturers of digital devices
The manufacturer of a digital device must test and label a product to inform an end-user of the
maximum emission level from the product when used in accordance with its instructions. The emission
levels encountered are classified as Class A or Class B. A system that meets the Class A requirement can
be marketed for use in an industrial or a commercial area. A system that meets the more stringent Class
B requirement can be marketed for use in a residential area in addition to an industrial or a commercial
area.
The end user is generally held responsible for ensuring that his system is suitable for its environment as
stated in the above paragraph and bears the financial responsibility for correcting any harmful
interference.
Modifications
Modifications or changes made to this device, and not approved by 3Com, may void the authority
granted by the FCC, or other such agency, to operate this equipment.
Shielded Cables
Connections between 3Com equipment and other equipment and peripherals must be made using
shielded cables in order to maintain compliance with FCC, and other agency, electromagnetic frequency
emissions limits.
Federal Communications Commission Notice
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 create radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area can cause harmful interference in which case the user will be required to
correct the interference at his own expense.
Canadian Notice
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus
set out in the interference-causing equipment standard entitled "Digital Apparatus", ICES-003 of the
Department of Communications
Avis Canadien
Cet appareil numérique respecte les limites bruits radioélectriques applicables aux appareils numériques
de Classe A prescrites dans la norme sur le matériel brouilleur: "Appareils Numériques", NMB-003 édictée
par le ministre des Communications.