Appendix 89
Once you have determined your system’s FCC classification, read the appropriate FCC notice. 
Note that FCC regulations provide that changes or modifications not expressly approved by Dell 
could void your authority to operate this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two 
conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired 
operation.
Class A
This equipment has been tested and found to comply with the limits for a Class A digital device 
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection 
against harmful interference when the equipment is operated in a commercial environment. This 
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in 
accordance with the manufacturer’s instruction manual, may cause harmful interference with radio 
communications. Operation of this equipment in a residential area is likely to cause harmful 
interference, in which case you will be required to correct the interference at your own expense.
Class B
This equipment has been tested and found to comply with the limits for a Class B digital device 
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This equipment generates, uses, and can 
radiate radio frequency energy and, if not installed and used in accordance with the manufacturer’s 
instruction manual, may cause interference with radio communications. However, there is no 
guarantee that interference will not occur in a particular installation. If this equipment does cause 
harmful interference to radio or television reception, which can be determined by turning the 
equipment off and on, you are encouraged to try to correct the interference by one or more of the 
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is 
connected.
• Consult the dealer or an experienced radio/television technician for help.