118 Appendixw w w . d e l l . c o m | s u p p o r t . d e l l . c o m Returning Items for Warranty Repair or CreditPrepare all items being returned, whether for repair or credit, as follows:1 Call Dell to obtain an authorization number, and write it clearly and prominently onthe outside of the box.2 Include a copy of the invoice and a letter describing the reason for the return.3 Include any accessories that belong with the item(s) being returned (power cables,CDs, guides, and so on) if the return is for credit.4 Pack the equipment to be returned in the original (or equivalent) packing materials.You are responsible for paying shipping expenses. You are also responsible for insuring anyproduct returned, and you assume the risk of loss during shipment to Dell. Collect-on-delivery packages are not accepted.Returns that are missing any of the preceding requirements will be refused at our receivingdock and returned to you.Regulatory NoticesElectromagnetic Interference (EMI) is any signal or emission, radiated in free space orconducted along power or signal leads, that endangers the functioning of a radio navigationor other safety service or seriously degrades, obstructs, or repeatedly interrupts a licensedradio communications service. Radio communications services include but are not limitedto AM/FM commercial broadcast, television, cellular services, radar, air-traffic control,pager, and Personal Communication Services (PCS). These licensed services, along withunintentional radiators such as digital devices, including computer systems, contribute tothe electromagnetic environment.Electromagnetic Compatibility (EMC) is the ability of items of electronic equipment tofunction properly together in the electronic environment. While this computer system hasbeen designed and determined to be compliant with regulatory agency limits for EMI, thereis no guarantee that interference will not occur in a particular installation. If this equipmentdoes cause interference with radio communications services, which can be determined byturning the equipment off and on, you are encouraged to try to correct the interference byone or more of the following measures:• Reorient the receiving antenna.• Relocate the computer with respect to the receiver.