HP LaserJet 8100 Multifunction Printer series - Manual (Page 83)

Appendix A Regulatory Information 83
Overview
Note Any changes or modifications to the printer that are not expressly approved
by HP could void the user’s authority to operate this equipment.
Use of a shielded interface cable is required to comply with the Class B
limits of Par t 15 of FCC rules.
Note The printer without the HP Digital Copy complies with Class B limits.
For more regulatory information, see the HP LaserJet MFP Upgrade Kit online
user guide.