Item
Connector
Description
11.
B1, B2, B5, B6
Memory module sockets for CPU 2
12.
SL1_CPU2_PB2
Slimline cable connector 1
13.
SL2_CPU2_PA2_SA2
Slimline cable connector 2
14.
SLOT4_X16 (CPU1/2)
M.2 riser connector
15.
B3, B4, B7, B8
Memory module sockets for CPU 2
16.
A1, A2, A5, A6
Memory module sockets for CPU 1
17.
NPIO2_CPU1_PB1
NVMe Connector
18.
LEAK_DET
Leak Sensor Connector (Optional)
19.
NPIO_CPU1_PA1_SA1
SATA / NVMe Connector
20.
BATTERY
Coin Cell Battery
System board jumper settings
For information about resetting the password jumper to disable a password, see the
Disabling a forgotten password
section.
Table 40. 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.
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 1 and 2 to pins 2 and 3.
82
Jumpers and connectors for PowerEdge C6525