Table 38. System board jumpers and connectors
Item
Connector
Description
36.
B16, B8, B15, B7, B14, B4, B13, B3
DIMMs for processor 2 channels E, F, G,
H
37.
SL1_CPU2_PB3_XB2
XGMI/NVMe connector 1
38.
FAN_2U2
Fan 2
39.
CPU2
Processor 2
40.
FAN_2U1_1U1/2
Fan 1
41.
B1, B9, B2, B10, B5, B11, B6, B12
DIMMs for processor 2 channels A, B, C,
D
42 .
LFT_CP
Left control panel
System board jumper settings
For information about resetting the password jumper to disable a password, see the
Disabling a forgotten password
section.
Table 39. 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.
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.
Disabling 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 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. Power off the system, and all the attached peripherals, and disconnect the system from the electrical outlet.
2. Remove the system cover.
3. Move the jumper on the system board from pins 2 and 4 to pins 4 and 6.
4. Replace the system cover.
180
Jumpers and connectors
