Dell PowerEdge 1950: Jumpers and Connectors

6

Jumpers and Connectors

This section provides specific information about the system jumpers. It also provides some basic

information on jumpers and switches and describes the connectors on the various boards in the system.

System Board Jumpers

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 system board cooling shroud by lifting the release latch and

sliding the shroud towards the front of the system. See Figure 3-13.

NOTE: Lift up the memory module airflow shroud for easy access to the jumpers.

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Figure 6-1. System Board Jumpers

Table 6-1. System Board Jumper Settings

Jumper Setting Description

1PWRD_EN

(default)

The password feature is enabled.

The password feature is disabled.

2NVRAM_CLR

(default)

The configuration settings are retained at system boot.

The configuration settings are cleared at the next system

boot. (If the configuration settings become corrupted to the

point where the system will not boot, install the jumper and

boot the system. Remove the jumper before restoring the

configuration information.)

NOTE: For the full name of an abbreviation or acronym used in this table, see the "Glossary" on page 147.

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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" on page 31. The password jumper enables these password features

or disables them and clears any password(s) currently in use.

NOTICE: See "Protecting Against Electrostatic Discharge" in the safety instructions in your Product Information

Guide.

1

Turn off the system, including any attached peripherals, and disconnect the system from the electrical

outlet.

2

Open the system. See "Opening and Closing the System" on page 46.

3

Lift up the memory module shroud.

4

Remove the jumper plug from the password jumper.

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

5

Close the system.

6

Reconnect your system and peripherals to their electrical outlets, 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.

7

Turn off the system, including any attached peripherals, and disconnect the system from the electrical

outlet.

8

Open the system. See "Opening and Closing the System" on page 46.

9

Install the jumper plug on the password jumper.

10

Lower the memory module shroud.

11

Close the system.

12

Reconnect your system and peripherals to their electrical outlets, and turn on the system.

13

Assign a new system and/or setup password.

To assign a new password using the System Setup program, see "Assigning a System Password" on

page 38.

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System Board Connectors

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

Figure 6-2. System Board Connectors

26

1

25

2

24

23

3

4

22

5

6

7

21

8

9

10

11

12

2

1

16

13

18

17

15

14

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Table 6-2. System Board Connectors

Connector Description

1 RAC_CONN2 Connector for the remote access control connector (RAC)

2 RAC_CONN1 Connector for the remote access control connector

3 NVRAM_CLR Configuration jumper

4 PWRD_EN Password jumper

5 DIMM 1 Memory module connector, slot 1

6 DIMM 5 Memory module connector, slot 5

7 DIMM 2 Memory module connector, slot 2

8 DIMM 6 Memory module connector, slot 6

9 DIMM 3 Memory module connector, slot 3

10 DIMM 7 Memory module connector, slot 7

11 DIMM 4 Memory module connector, slot 4

12 DIMM 8 Memory module connector, slot 8

13 FAN_MOD4 System cooling fan module 4 connector

14 CPU1 Microprocessor connector 1

15 FAN_MOD3 System cooling fan module 3 connector

16 FAN_MOD2 System cooling fan module 2 connector

17 CPU2 Microprocessor connector 2

18 FAN_MOD1 System cooling fan module 1 connector

19 SIDEPLANE Sideplane connector

20 BACKPLANE Backplane power connector

21 TOE_KEY TCP/IP offload engine key

22 LEFT PCIe RISER Left riser board connector

23 SATA_A SATA A connector

24 BATTERY Connector for the 3.0-V coin battery

25 LEFT PCI-X RISER Left riser board connector (PCIe or PCI-X)

26 CENTER RISER Center riser board connector (PCIe or PCI-X)

NOTE: For the full name of an abbreviation or acronym used in this table, see the "Glossary" on page 147.

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SAS/SATA Backplane Board Connectors

Figure 6-3 shows the location of the connectors on the SAS/SATA backplane board that supports two 3.5-inch

hard drives (Option 1).

Figure 6-3. SAS 3.5-Inch-Drive Backplane Board Components - Option 1

1

3

4

2

1 backplane power connector 2 Drive 0 connector 3 SAS A connector

4 Drive 1 connector

Figure 6-4 and Figure 6-5 show the location of the connectors on the SAS/SATA backplane board that supports

four 2.5-inch hard drives (Option 2).

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Figure 6-4. SAS 2.5-Inch-Drive Backplane Board Components - Option 2 (Front)

6

5

4

3

7

2

1

1 Drive 1 connector 2 Drive 0 connector 3 Drive 3 connector

4 Drive 2 connector 5 securing tabs 6 securing slots

7 release latches (2)

Figure 6-5. SAS Backplane Board Components - Option 2 (Back)

1

2

1 SAS A connector 2 backplane power connector

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