Dell Precision 620 - Manual (Page 21)

System Board Jumpers
Figure 29 shows the location of the jumpers on the system board. Table 1 lists the system board jumpers and their settings.
Figure 29. 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
32 32-bit PCI/RAID expansion-card connector
33 32-bit PCI expansion-card connectors (3)
34 AGP Pro connector
35 Network controller connector
36 Diagnostic LEDs
37 USB connectors (stacked)
38 Microphone, audio line-in, and audio line-out connectors
39 PS/2 keyboard and mouse connectors (stacked)
40 System fan connector
41 Serial port connectors (stacked)
42 Parallel port connector and SCSI port connectors (stacked)
Jumper Setting Description
PSWD (default) Password features are enabled.
Password features are disabled.
INTRUDE (default) Chassis intrusion switch is enabled.
Chassis intrusion switch is disabled.
RTCRST Real-time clock reset. Can be used for troubleshooting purposes.