Dell PowerConnect RPS-60 Guide D'installation page 21

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.
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D e l l Po w er C on n e c t RP S - 6 0 S et up G u i d e