System Board Jumper Settings; Disabling Forgotten Password - Dell EMC PowerEdge R940 Installation And Service Manual

Item Connector
11 RM_UPI_A
12 RM_UPI_D
13 J_IORR_PWR
14 IO_RISER3
15 CPU4

System board jumper settings

For information on resetting the password jumper to disable a password, see the Disabling a forgotten password section.
Table 46. System board jumper settings
Jumper
PWRD_EN
NVRAM_CLR

Disabling 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 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 2 and 4 to pins 4 and 6.
4 Install the system cover.
The existing passwords are not disabled (erased) until the system boots with the jumper on pins 4 and 6. However, before you assign a
new system and/or setup password, you must move the jumper back to pins 2 and 4.
NOTE: If you assign a new system and/or setup password with the jumper on pins 4 and 6, the system disables the new
password(s) the next time it boots.
5 Reconnect the system to its electrical outlet and turn on the system, including any attached peripherals.
6 Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.
7 Remove the system cover.
158 Jumpers and connectors
Setting
Description
UPI cable connector "A"
UPI cable connector "D"
Right expansion card riser power connector
Riser 3 connector
CPU4 processor heat sink module socket
Description
The BIOS password feature is enabled.
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.
The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.