Dell XPS 8500 (Early 2012) - Manual (Page 128)

Password:
4 Wait for approximately five seconds to clear the password 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.
System Setup Utility 128