S ys t e m I n f or m a t io n Gu i d e 21ï Do not push any objects into the openings of your computer. Doing socan cause fire or electric shock by shorting out interior components.ï Keep your computer away from radiators and heat sources. Also, do notblock cooling vents. Avoid placing loose papers underneath yourcomputer; do not place your computer in a closed-in wall unit or on abed, sofa, or rug.Ergonomic Computing HabitsCAUTION: Improper or prolonged keyboard use may result ininjury.CAUTION: Viewing the monitor screen for extended periods oftime may result in eye strain.For comfort and efficiency, observe the ergonomic guidelines in your UserísGuide when setting up and using your computer system.Regulatory InformationElectromagnetic Interference (EMI) is any signal or emission, radiated infree space or conducted along power or signal leads, that endangers thefunctioning of a radio navigation or other safety service or seriouslydegrades, obstructs, or repeatedly interrupts a licensed radiocommunications service.Your Dell computer system is designed to comply with applicableregulations regarding EMI. Changes or modifications not expresslyapproved by Dell could void the userís authority to operate the equipment.NOTE: Additional regulatory information regarding your system can be foundin yourUserís Guide.