Regulatory InformationElectromagnetic Interference (EMI) is any signal or emission, radiated in free space or conducted alongpower or signal leads, that endangers the functioning of a radio navigation or other safety service orseriously degrades, obstructs, or repeatedly interrupts a licensed radio communications service. Radiocommunications services include but are not limited to AM/FM commercial broadcast, television, cellularservices, radar, air-traffic control, pager, and Personal Communication Services (PCS). These licensedservices, along with unintentional radiators such as digital devices, including computers, contribute to theelectromagnetic environment.Electromagnetic Compatibility is the ability of items of electronic equipment to function properly together inthe electronic environment. While this computer has been designed and determined to be compliant withregulatory agency limits for EMI, there is no guarantee that interference will not occur in a particularinstallation. If this equipment does cause interference with radio communications services, which can bedetermined by turning 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.Move the computer away from the receiver.Plug the computer into a different outlet so that the computer and the receiver are on different branchcircuits.If necessary, consult a Dell Technical Support representative or an experienced radio/television technicianfor additional suggestions.Dell™ computers are designed, tested, and classified for their intended electromagnetic environment. Theseelectromagnetic environment classifications generally refer to the following harmonized definitions:Class A is typically for business or industrial environments.Class B is typically for residential environments.Information Technology Equipment (ITE), including devices, expansion cards, printers, input/output (I/O)devices, monitors, and so on, that are integrated into or connected to the computer should match theelectromagnetic environment classification of the computer.A Notice About Shielded Signal Cables: Use only shielded cables for connecting devices to any Delldevice to reduce the possibility of interference with radio communications services. Usingshielded cables ensures that you maintain the appropriate Electromagnetic Compatibilityclassification for the intended environment. For parallel printers, a cable is available from Dell. Ifyou prefer, you can order a cable from Dell on the World Wide Web ataccessories.us.dell.com/sna/category.asp?category_id=4117.