298                                                                                                                     Keysight N9938-90003 User’s Guide
Safety Considerations
Packaging Markings
Packaging Markings
AC/DC Adapter Markings
Universal recycling symbol. This symbol indicates compliance with the China 
standard GB 18455–2001 as required by the China RoHS regulations for 
paper/fiberboard packaging.
The UL Marks are registered certification marks of Underwriters Laboratories Inc. 
(UL). It means that UL has tested and evaluated representative samples of that 
product and determined that it meets UL's safety requirements. When 
accompanied by a 'C' and 'US', it indicates compliance to both Canadian and US 
requirements.
NOM Mark (Normality of Mexico) indicates that the product was tested by an 
accredited laboratory in Mexico and meets Mexico’s safety requirements.
Japan’s safety and EMC compliance mark.
China’s safety and EMC compliance mark.
Taiwan’s safety and EMC compliance mark.
Singapore’s safety mark.
Korean Certification (KC) mark; includes the marking’s identifier code.
AC (Alternating Current).