Owners Manual
Table Of Contents
- Dell EMC PowerEdge MX840c Installation and Service Manual
- About this document
- Dell EMC PowerEdge MX840c overview
- Initial system setup and configuration
- Installing and removing sled components
- Safety instructions
- Before working inside your sled
- After working inside your sled
- Recommended tools
- PowerEdge MX840c sled
- Sled cover
- Air shroud
- Processor expansion module
- Drives
- Drive backplane
- Cable routing
- Drive cage
- Battery backup unit
- Control panel
- System memory
- Processors and heat sinks
- iDRAC card
- PERC cards
- Optional Internal dual SD module
- M.2 BOSS module
- Mezzanine card
- Optional internal USB memory key
- System battery
- System board
- Trusted Platform Module
- Jumpers and connectors
- System diagnostics and indicator codes
- Getting help
- Documentation resources
Table 14. 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 15. 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 101