Owners Manual

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:

• System board jumper settings

• System board connectors

• Disabling forgotten password

System board jumper settings

For information on resetting the password jumper to disable a password, see the Disabling a Forgotten Password section.

Table 25. System board jumper settings

Jumper Setting Description

PWRD_EN The password reset feature is enabled (pins 2–4). BIOS local

access is unlocked at the next AC power cycle.

The password reset feature is disabled (pins 4–6).

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 forgotten password on page 128

126 Jumpers and connectors