Back to Contents Page

Jumpers and Connectors

Dell™ PowerEdge™ 840 Systems Hardware Owner's Manual

  System Board Jumpers

  System Board Connectors

  Disabling a Forgotten Password


This section provides specific information about the system jumpers and describes the connectors on the various boards in the system.

System Board Jumpers

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.

Figure 6-1 shows the location of the configuration jumpers on the system board. Table 6-1 lists the jumper settings.

NOTE: To access the jumpers, remove the memory cooling shroud by lifting the release latch and sliding the shroud toward the front of the system. See Figure 3-14.

Figure 6-1. System Board Jumpers

Table 6-1. System Board Jumper Settings 

Jumper

Setting

Description

PASSWD_EN

  (default)

The password feature is enabled.

 

The password feature is disabled.

NVRAM_CLR

  

The configuration settings in NVRAM are cleared at next system boot.

 

(default)

The configuration settings in NVRAM are retained at system boot.

 

 jumpered      unjumpered

System Board Connectors

See Figure 6-2 and Table 6-2 for the location and description of the system board connectors.

Figure 6-2. System Board Connectors

Table 6-2. System Board Connectors 

Item

Connector

Description

1

RAC_CONN

Connector for the remote access controller (RAC)

2

SLOT_5

PCI 32-bit, 33-MHz (5-V) expansion slot connector

3

SLOT_4

PCI-X 64-bit, 133-MHz (3.3-V) expansion slot connector

4

SLOT_3

PCI-X 64-bit, 133-MHz (3.3-V) expansion slot connector

5

SLOT_2

PCI-Express (x1) expansion slot connector

6

SLOT_1

PCI-Express (x8) expansion slot connector

7

BATTERY

Connector for the 3.0-V coin battery

8

HD

Hard drive LED activity connector

9

BACK_FAN

Fan power connector

10

CPU

Processor connector

11

12V

Power connector

12

PWR_CONN

Power connector

13

IDE

IDE optical device connector

14

FDD

Diskette drive connector

15

DIMM2_ B

Memory module connector

16

DIMM1_ B

Memory module connector

17

DIMM2_ A

Memory module connector

18

DIMM2_ A

Memory module connector

19

FRONT_PANEL

Control panel connector

20

USB

USB 2.0-compliant connector

21

SATA_0

SATA connector

22

SATA_1

SATA connector

23

SATA_2

SATA connector

24

SATA_3

SATA connector

25

FRONT_FAN

Fan power connector

26

BP_I2C

Connector for the baseboard management controller (BMC) inter-IC (I2C) cable for the optional SCSI backplane

Disabling a Forgotten Password

The system's software security features include a system password and a setup password, which are discussed in detail in Using the System Setup Program. The password jumper enables these password features or disables them and clears any password(s) currently in use.

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting against electrostatic discharge.
  1. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

  2. Open the system. See Opening the System.

  3. Remove the memory cooling shroud by lifting the release latch and sliding the shroud toward the front of the system. See Figure 3-14.

  4. Remove the password jumper plug.

See Figure 6-1 to locate the password jumper on the system board.

  1. Replace the memory cooling shroud.

  2. Close the system. See Closing the System.

  3. Reconnect the system to the electrical outlet, and turn on the system.

The existing passwords are not disabled (erased) until the system boots with the password jumper plug removed. However, before you assign a new system and/or setup password, you must install the jumper plug.

NOTE: If you assign a new system and/or setup password with the jumper plug still removed, the system disables the new password(s) the next time it boots.
  1. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet.

  2. Open the system.

  3. Remove the memory cooling shroud.

  4. Reinstall the password jumper plug in its original position to enable the password protection feature.

  5. Reinstall the memory cooling shroud.

  6. Close the system, reconnect the system to the electrical outlet, and turn on the system.

  7. Assign a new system and/or setup password.

To assign a new password using the System Setup program, see Using the System Setup Program.

Back to Contents Page