6 System Infor mation Guidew w w . d e l l . c o m | s u p p o r t . d e l l . c o m• To help avoid the potential hazard of electric shock, do not connect or disconnect anycables or perform maintenance or reconfiguration of this product during an electricalstorm. Do not use your computer during an electrical storm unless all cables have beendisconnected and the computer is operating on battery power.• If your computer includes a modem, the cable used with the modem should bemanufactured with a minimum wire size of 26 American wire gauge (AWG) and an FCC-compliant RJ-11 modular plug.• Before you open the memory module/Mini PCI card/modem cover on the bottom of yourcomputer, disconnect all cables from their electrical outlets and disconnect the telephonecable.• If your computer has a modem RJ-11 connector and a network RJ-45 connector, insert thetelephone cable into the RJ-11 connector, not the RJ-45 connector.• PC Cards may become very warm during normal operation. Use care when removing PCCards after their continuous operation.• Before you clean your computer, disconnect the computer from the electrical outlet.Clean your computer with a soft cloth dampened with water. Do not use liquid or aerosolcleaners, which may contain flammable substances.Power• Use only the Dell-provided AC adapter approved for use with this computer. Use ofanother AC adapter may cause a fire or explosion.• Before you connect the computer to an electrical outlet, check the AC adapter voltagerating to ensure that the required voltage and frequency match the available powersource.• To remove the computer from all power sources, turn the computer off, remove thebattery pack, and disconnect the AC adapter from the electrical outlet.• To help prevent electric shock, plug the AC adapter and device power cables into properlygrounded power sources. These power cables may be equipped with 3-prong plugs toprovide an earth grounding connection. Do not use adapter plugs or remove thegrounding prong from the power cable plug. If you use a power extension cable, use theappropriate type, 2-prong or 3-prong, to mate with the AC adapter power cable.• Be sure that nothing rests on your AC adapter’s power cable and that the cable is notlocated where it can be tripped over or stepped on.CAUTION: Safety Instructions (continued)