Service Manual

33. Front backplane signal 0 34. DIMMS for processor
35. TPM 36. Front video
System board jumper settings
For information about resetting the password jumper to disable a password, see the Disable a forgotten password section.
Table 53. System board jumper settings
Jumper Setting Description
PWRD_EN The BIOS password feature is enabled.
The BIOS password feature is disabled. The BIOS password is
now disabled and you are not allowed to set a new password.
NVRAM_CLR The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.
Table 54. System board jumper settings
Jumper Setting Pin number Description
NVRAM_CLR 2, 3 The BIOS configuration settings are retained at system boot.
1, 2 The BIOS configuration settings are cleared at system boot.
PWRD_EN 1, 2 The BIOS password feature is enabled.
2, 3 The BIOS password feature is disabled. iDRAC local access is
unlocked at next AC power cycle. iDRAC password reset is
enabled in F2 iDRAC settings menu.
CAUTION: Be careful when changing the BIOS settings. The BIOS interface is designed for advanced users. Any
change in the setting could prevent your system from starting correctly and you might have potential loss of
data.
Disable a forgotten password
The software security features of the system include a system password and a setup password. The password jumper enables or
disables password features and clears any passwords 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.
126 Jumpers and connectors