Dell XPS 8500 Owner's Manual page 130

4 Wait for approximately five seconds to clear the CMOS setting.
5 Remove the 2-pin jumper plug from pins 1 and 2 and replace it on pins 2
and 3.
6 Replace the computer cover. See "Replacing the Computer Cover" on
page 25.
7 Follow the steps in "After Working Inside Your Computer" on page 15.
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System Setup Utility