Dell Precision Workstation 450 Guia Del Usuario página 70

and Communications (MIC) registration labels located on your computer (or other Dell digital device). The MIC label may be located separately from the other
regulatory marking applied to your product. Line two of the label identifies the emissions class for the product-"(A)" for Class A products or "(B)" for Class B
products.
NOTA: MIC emissions requirements provide for two classifications:
Class A devices are for business purposes.
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Class B devices are for nonbusiness purposes.
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Class A Device
Please note that this device has been approved for business purposes with regard to electromagnetic interference. If you find that this device is not suitable
for your use, you may exchange it for a nonbusiness-purpose device.
MIC Class A Regulatory Label
If the regulatory label includes the following marking, your computer is a Class A product:
Class B Device
Please note that this device has been approved for nonbusiness purposes and may be used in any environment, including residential areas.
MIC Class B Regulatory Label
If the regulatory label includes the following marking, your computer is a Class B product.
Polish Center for Testing and Certification Notice
The equipment should draw power from a socket with an attached protection circuit (a three-prong socket). All equipment that works together (computer,
monitor, printer, and so on) should have the same power supply source.
The phasing conductor of the room's electrical installation should have a reserve short-circuit protection device in the form of a fuse with a nominal value no
larger than 16 amperes (A).
To completely switch off the equipment, the power supply cable must be removed from the power supply socket, which should be located near the equipment
and easily accessible.
A protection mark "B" confirms that the equipment is in compliance with the protection usage requirements of standards PN-93/T-42107 and PN-EN 55022:
1996.