HP 9000 V-Class Operator's Manual page 3

This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of
this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the
interference at his own expense.
The user is cautioned that changes or modifications not expressly
approved by the party responsible for compliance (Hewlett-Packard)
could result in the equipment being noncompliant with FCC Class A
requirements and void the user's authority to operate the equipment.
Do not connect external equipment to the utility outlets in the Hewlett-
Packard V-Class server. Unauthorized connection voids all agencies'
emissions certification.