Jumpers and connectors
This topic provides specific information about the system jumpers. It also provides some basic information about jumpers and switches and
describes the connectors on the various boards in the system. Jumpers on the system board help to disable system and setup passwords.
You must know the connectors on the system board to install components and cables correctly.
Topics:
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Disabling a forgotten password
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System board connectors and jumpers
System board jumper settings
For information about resetting the password jumper to disable a password, see the Disabling a forgotten password section.
Table 32. System board jumper settings
Jumper
Setting
Description
PWRD_EN
The password reset feature is enabled (pins 2–4).
The password reset feature is disabled (pins 4–6). The iDRAC local
access is unlocked at the next AC power cycle.
NVRAM_CLR
The configuration settings are retained at the next system boot
(pins 3–5).
The configuration settings are cleared at system boot (pins 1–3).
Related tasks
Disabling a forgotten password
Disabling a forgotten password
The software security features of the system include a system password and a setup password. The password jumper enables these
password features or disables them and clears any password(s) currently in use.
Prerequisites
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 are shipped with your product.
Steps
1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover.
3. Move the jumper on the system board jumper from pins 4 and 6 to pins 2 and 4.
4. Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 2 and 4. However, before you assign a
new system and/or setup password, you must move the jumper back to pins 4 and 6.
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Jumpers and connectors
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