Ul Listed Accessory - US Robotics Courier V.Everything Getting Started Manual

For your own protection, make sure that the electrical ground connections
of the power utility, telephone lines, and internal metallic water pipe
system, if present, are connected together. This precaution may be
particularly important in rural areas.
Warning: Do not attempt to make such connections yourself; contact the
appropriate electric inspection authority or electrician.

UL Listed Accessory

Your internal Courier modem is a UL listed accessory. It must be used
with a UL listed computer.
Warranty B-9