User Guide

Jumpers and Connectors 163
Jumpers and Connectors
This section provides specific information about the system jumpers. It also
provides some basic information on jumpers and switches and describes the
connectors on the various boards in the system.
System Board Jumpers
Figure 6-1 shows the location of the configuration jumpers on the system
board. Table 6-1 lists the jumper settings.
Disabling a Forgotten Password
The system's software security features include a system password and a setup
password, which are discussed in detail in "Using the System Setup Program
and UEFI Boot Manager." The password jumper enables these password
features or disables them and clears any password(s) currently in use.
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
Table 6-1. System Board Jumper Settings
Jumper Setting Description
PWRD_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 at
system boot (pins 3-5)
The configuration settings are cleared at the
next system boot (pins 1-3)