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SE440BX Motherboard Product Guide
61
Ensure Electromagnetic Compatibility (EMC)
Before computer integration, make sure that the power supply and other modules have passed
EMC testing using a motherboard with a microprocessor from the same family and operating at the
same (or higher) speed as the microprocessor on this motherboard.
In the installation instructions for the host chassis, power supply, and other modules pay close
attention to the following:
• Certifications
• External I/O cable shielding and filtering
• Mounting, grounding, and bonding requirements
• Keying connectors when mismating of connectors could be hazardous
If the power supply and other modules have not passed applicable EMC testing before integration,
EMC testing must be conducted on a representative sample of the newly completed computer.
Ensure Host Computer and Accessory Module Certifications
Make sure that the host computer, any added subassembly, such as a board or drive assembly, and
internal or external wiring, are certified for the region(s) where the end-product will be used.
Marks on the product are proof of certification. Certification marks are as follows:
In Europe
The CE marking signifies compliance with all relevant European requirements. If the host
computer does not bear the CE marking, obtain a supplier’s Declaration of Conformity to the
appropriate standards required by the European EMC Directive and Low Voltage Directive. Other
directives, such as the Machinery and Telecommunications Directives, may also apply depending
on the type of product. No regulatory assessment is necessary for low voltage DC wiring used
internally or wiring used externally when provided with appropriate overcurrent protection.
Appropriate protection is provided by a maximum 8-Amp current limiting circuit or a maximum
5-Amp fuse or positive temperature coefficient (PTC) resistor. All Intel motherboards now have
PTCs on all external ports that provide DC power externally.
In the United States
A certification mark by a Nationally Recognized Testing Laboratory (NRTL) such as UL, CSA, or
ETL signifies compliance with safety requirements. External wiring must be UL Listed and
suitable for the intended use. Internal wiring must be UL Listed or Recognized and rated for
applicable voltages and temperatures. The FCC mark (Class A for commercial or industrial only
or Class B for residential) signifies compliance with electromagnetic interference requirements.
In Canada
A nationally recognized certification mark such as CSA or cUL signifies compliance with safety
requirements. No regulatory assessment is necessary for low voltage DC wiring used internally or
wiring used externally when provided with appropriate overcurrent protection. Appropriate
protection is provided by a maximum 8-Amp current limiting circuit or a maximum 5-Amp fuse or
positive temperature coefficient (PTC) resistor. All Intel motherboards now have PTCs on all
external ports that provide DC power externally.