Dell Dimension XPS 50 Reference Manual page 178

This is a Class A product based on the standard of the Voluntary Control Council for
Interference (VCCI) for information technology equipment. If this equipment is used in
a domestic environment, radio disturbance may arise. When such trouble occurs, the
user may be required to take corrective actions.
VCCI-A
This is a Class B product based on the standard of the Voluntary Control Council for
Interference (VCCI) for information technology equipment. If this equipment is used
near a radio or television receiver in a domestic environment, it may cause radio inter-
ference. Install and use the equipment according to the instruction manual.
D-6 Dell Dimension XPS Txxx and Txxxr Systems Reference and Troubleshooting Guide