Dell Precision M60 - Manual (Page 8)

6 S y s t e m I n f o r m a t i o n G u i d e
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• To help avoid the potential hazard of electric shock, do not connect or disconnect any
cables or perform maintenance or reconfiguration of this product during an electrical
storm. Do not use your computer during an electrical storm unless all cables have been
disconnected and the computer is operating on battery power.
• If your computer includes a modem, the cable used with the modem should be
manufactured 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
your computer, disconnect all cables from their electrical outlets and disconnect the
telephone cable.
• If your computer has a modem RJ-11 connector and a network RJ-45 connector, insert
the telephone cable into the RJ-11 connector, not the RJ-45 connector.
• PC Cards may become very warm during normal operation. Use care when removing
PC Cards 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
aerosol cleaners, which may contain flammable substances.
Power
• Use only the Dell-provided AC adapter approved for use with this computer. Use of
another AC adapter may cause a fire or explosion.
• Before you connect the computer to an electrical outlet, check the AC adapter voltage
rating to ensure that the required voltage and frequency match the available power
source.
• To remove the computer from all power sources, turn the computer off, remove the
battery pack, and disconnect the AC adapter from the electrical outlet.
• To help prevent electric shock, plug the AC adapter and device power cables into
properly grounded power sources. These power cables may be equipped with 3-prong
plugs to provide an earth grounding connection. Do not use adapter plugs or remove the
grounding prong from the power cable plug. If you use a power extension cable, use the
appropriate type, 2-prong or 3-prong, to mate with the AC adapter power cable.
CAUTION: Safety Instructions (continued)