IBM X.25 - Manual (Page 65)

Japan
This equipment is in the 1st Class category (information equipment
to be used in commercial and/or industrial areas) and conforms to
the standards set by the Voluntary Control Council for Interference
by Information Technology Equipment aimed at preventing radio
interference in commercial and industrial areas.
Consequently, when used in a residential area or in an adjacent area
thereto, radio interference may be caused to radios and TV
receivers, and so on.
Read the instructions for correct handling.
Korea
Please note that this device has been approved for business purpose
with regard to electromagnetic interference. If you find this is not
suitable for your use, you may exchange it for a non-business
purpose one.
Trademarks and Service Marks
The following terms are trademarks of the IBM Corporation in the
United States or other countries, or both:
IBM Micro Channel
OS/2 Operating System/2
PS/2 Personal System/2
Other company, product, and service names may be trademarks or
service marks of others.
Notices B-7