Dell Precision 610 - Manual (Page 117)

Figure E-3. MOC Class A Regulatory Mark
Class B Device
Please note that this device has been approved for nonbusiness purposes and may be used in any environment, including
residential areas.
Figure E-4. MOC Class B Regulatory Mark
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 10 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-89/E-06251.