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Setting Up Your Computer 31
Surge Protectors
Surge protectors and power strips equipped with surge protection help prevent damage to your
computer from voltage spikes that can occur during electrical storms or after power
interruptions. Some surge protector manufacturers include warranty coverage for certain types
of damage. Carefully read the device warranty when choosing a surge protector. A device with a
higher joule rating offers more protection. Compare joule ratings to determine the relative
effectiveness of different devices.
NOTICE: Most surge protectors do not protect against power fluctuations or power interruptions
caused by nearby lightning strikes. When lightning occurs in your area, disconnect the telephone line
from the telephone wall jack and disconnect your computer from the electrical outlet.
Many surge protectors have a telephone jack for modem protection. See the surge protector
documentation for modem connection instructions.
NOTICE: Not all surge protectors offer network adapter protection. Disconnect the network cable from
the network wall jack during electrical storms.
Line Conditioners
NOTICE: Line conditioners do not protect against power interruptions.
Line conditioners are designed to maintain AC voltage at a fairly constant level.
Uninterruptible Power Supplies
NOTICE: Loss of power while data is being saved to the hard drive may result in data loss or file damage.
NOTE: To ensure maximum battery operating time, connect only your computer to a UPS. Connect other
devices, such as a printer, to a separate power strip that provides surge protection.
A UPS protects against power fluctuations and interruptions. UPS devices contain a battery that
provides temporary power to connected devices when AC power is interrupted. The battery
charges while AC power is available. See the UPS manufacturer documentation for information
on battery operating time and to ensure that the device is approved by Underwriters
Laboratories (UL).
book.book Page 31 Wednesday, October 26, 2005 1:00 PM