3. PWRD_EN (Jumpers)
4. NVRAM_CLR (Jumpers)
5. LOM riser card
6. Battery
7. Riser slot 1A
8. Mini PERC
9. System power 3
10. DIMMS for processor
11. Fan 6
12. Fan 5
13. SATA_A/PCIE_A
14. Fan 4
15. PCIE-B
16. SATA_B/PCIE_C
17. Processor
18. PCIE-D
19. Fan 3
20. PCIE-E
21. PCIE-F
22. Fan 2
23. Left control panel
24. Front backplane signal 1
25. Intrusion switch
26. Internal USB 3.0
27. System power 1
28. System power 2
29. PIB signal 2
30. PIB signal 1
31. IDSDM
32. Rear backplane/ ODD power
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
Disabling a forgotten password
section.
Table 47. 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.
Jumpers and connectors
113