Dell Precision WorkStation 420 - Desktop System Board Jumpers

System Board Jumpers
Figure 23 shows the location of the jumpers on the system board. Table1 lists the system board jumpers and their settings.
Figure 23. System Board Jumpers
Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The
wire connects the pins and creates a circuit.
NOTICE: Make sure your system is turned off before you change a jumper setting. Otherwise, damage to your system or
unpredictable results may occur.
To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.
Table 1. System Board Jumper Settings
22
Auxiliary hard-disk drive access LED connector
23
PCI expansion slots
24
AGP graphics slot
25
Remote wakeup on LAN connector
26
Primary processor 0 socket
27
Network cable connector
28
Diagnostic LEDs
29
USB connectors
30
Secondary processor 1 socket
31
Line-in connector
32
Line-out connector
33
Microphone Connector
34
Mouse/keyboard (stacked)
35
System fan power connector
36
Serial port 1/ serial port 2 (stacked)
37
Parallel port/external SCSI port (stacked)
Jumper
Setting
Description
PSWD
(default)
Password features are enabled.
Password features are disabled.
RTCRST
Real-time clock reset. Can be used for troubleshooting purposes.
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