Item
Connector
Description
7
PWRD_EN
System configuration jumper (Enabling or disabling the
password)
8
NVRAM_CLR
System configuration jumper (Retaining or clearing
configuration settings)
9.
BOSS/IDSDM
IDSDM or BOSS card connector
10.
INT_USB1_3.0
Internal USB connector
11.
A8, A4, A5, A6, A7, A1, A2, A3
Memory module sockets
12.
MEZZ1_FAB_C
Mezzanine card connector
13.
MEZZ2_FAB_B
Mezzanine card connector
14
VFLASH
Micro vFlash card connector
15
bNDC
Network Daughter Card (NDC) connector
16
CPU1
Processor 1
17
CPU2
Processor 2
18
BATTERY
System battery connector
System board jumper settings
For information on resetting the password jumper to disable a password, see
Disabling a forgotten password
Table 28. System board jumper settings
Jumper
Setting
Description
NVRAM_CLR
(default)
The BIOS configuration settings are retained at system boot.
The BIOS configuration settings are cleared at system boot.
PWRD_EN
(default)
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.
Disabling a forgotten password
The software security features of the PowerEdge M640 system include a system password and a setup password. The password jumper
enables these password features or disables them, and clears any password(s) currently in use.
Prerequisite
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 came with the product.
Jumpers and connectors
107
