Dell T5400 Quick Reference Manual

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Quick Reference Guide 17Surge ProtectorsSurge protectors and power strips equipped with surge protection help preventdamage to your computer from voltage spikes that can occur during electricalstorms or after power interruptions. Some surge protector manufacturers includewarranty coverage for certain types of damage. Carefully read the device warrantywhen choosing a surge protector and compare joule ratings to determine therelative effectiveness of different devices. A device with a higher joule rating offersmore protection.NOTICE: Most surge protectors do not protect against power fluctuations or powerinterruptions caused by nearby lightning strikes. When lightning occurs in your area,disconnect the telephone line from the telephone wall jack and disconnect yourcomputer from the electrical outlet.Many surge protectors have a telephone jack for modem protection. See thesurge protector documentation for modem connection instructions.NOTICE: Not all surge protectors offer network adapter protection. Disconnect thenetwork cable from the network wall jack during electrical storms.Line ConditionersNOTICE: Line conditioners do not protect against power interruptions.Line conditioners are designed to maintain AC voltage at a fairly constant level.Uninterruptible Power SuppliesNOTICE: Loss of power while data is being saved to the hard drive may result indata loss or file damage.NOTE: To ensure maximum battery operating time, connect only your computer toa UPS. Connect other devices, such as a printer, to a separate power strip thatprovides surge protection.A UPS protects against power fluctuations and interruptions. UPS devicescontain a battery that provides temporary power to connected devices whenAC power is interrupted. The battery charges while AC power is available. Seethe UPS manufacturer documentation for information on battery operating timeand to ensure that the device is approved by Underwriters Laboratories (UL).