Jumpers and Connectors 163Jumpers and ConnectorsThis section provides specific information about the system jumpers. It alsoprovides some basic information on jumpers and switches and describes theconnectors on the various boards in the system.System Board JumpersFigure 6-1 shows the location of the configuration jumpers on the systemboard. Table 6-1 lists the jumper settings.Disabling a Forgotten PasswordThe system's software security features include a system password and a setuppassword, which are discussed in detail in "Using the System Setup Programand UEFI Boot Manager." The password jumper enables these passwordfeatures or disables them and clears any password(s) currently in use.CAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.Table 6-1. System Board Jumper SettingsJumper Setting DescriptionPWRD_EN (default) The password feature is enabled(pins 2-4)The password feature is disabled(pins 4-6)NVRAM_CLR (default) The configuration settings are retained atsystem boot (pins 3-5)The configuration settings are cleared at thenext system boot (pins 1-3)
