Xerox 480 ST System Administration Manual page 5

WARNING
This product is certified manufactured and tested in compliance with
strict safety and radio frequency interference regulations. Any
unauthorised alteration which, includes the addition of new
functions or the connection of external devices, may impact this
certification. Please contact your local XEROX Limited
representative for a list of approved accessories.
WARNING
In order to allow this equipment to operate in proximity to
Industrial, Scientific and Medical (ISM) equipment, the external
radiation from the ISM equipment may have to be limited or special
mitigation measures taken.
WARNING
Shielded cables must be used with this equipment to maintain
compliance with Council Directive 89/336/EEC.
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Xerox Document Centre System Administration Guide