Dell PowerEdge MX840c EMC PowerEdge MX840c Installation and Service Manual - Page 127

System board jumper settings, Disabling forgotten password

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Table 17. PEM board jumpers and connectors Item Connector 1. C7, C1, C8, C2, C9, C3 2. CPU3 3. C6, C12, C5, C11, C4, C10 4. J_MEZZ_A2 (CPU3) 5. D3, D9, D2, D8, D1, D7 6. CPU4 7. J_MEZZ_B2 (CPU4) 8. D10, D4, D11, D5, D12, D6 9. SYS_PWR_CONN 10. J_MINI_MEZZ_C2 (CPU4) 11. AUX4 12. AUX3 Description Memory module sockets Processor 3 Memory module sockets Mezzanine card (Fabric A2 card) connector Memory module sockets Processor 4 Mezzanine card (Fabric B2 card) connector Memory module sockets System power connector Mini Mezzanine card (Fabric C2 card ) connector AUX 4 connector AUX 3 connector System board jumper settings For information on resetting the password jumper to disable a password, see the Disabling a forgotten password section. Table 18. System board jumper settings Jumper Setting PWRD_EN Description The BIOS password feature is enabled. NVRAM_CLR 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. Disabling forgotten password The software security features of the sled 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. Jumpers and connectors 127

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Table 17. PEM board jumpers and connectors
Item
Connector
Description
1.
C7, C1, C8, C2, C9, C3
Memory module sockets
2.
CPU3
Processor 3
3.
C6, C12, C5, C11, C4, C10
Memory module sockets
4.
J_MEZZ_A2 (CPU3)
Mezzanine card (Fabric A2 card)
connector
5.
D3, D9, D2, D8, D1, D7
Memory module sockets
6.
CPU4
Processor 4
7.
J_MEZZ_B2 (CPU4)
Mezzanine card (Fabric B2 card)
connector
8.
D10, D4, D11, D5, D12, D6
Memory module sockets
9.
SYS_PWR_CONN
System power connector
10.
J_MINI_MEZZ_C2 (CPU4)
Mini Mezzanine card (Fabric C2 card )
connector
11.
AUX4
AUX 4 connector
12.
AUX3
AUX 3 connector
System board jumper settings
For information on resetting the password jumper to disable a password, see the
Disabling a forgotten password
section.
Table 18. System board jumper settings
Jumper
Setting
Description
PWRD_EN
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.
NVRAM_CLR
The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.
Disabling forgotten password
The software security features of the sled 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.
Jumpers and connectors
127