Dell Precision 220 - Manual (Page 16)

System Board Jumpers
Figure 22 shows the location of the jumpers on the system board. Table 1 lists the system board jumpers and their settings.
Figure 22. 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
System Board Labels
Table 2 lists the labels for connectors and sockets on your system board, and it gives a brief description of their functions.
Table 2. System Board Connectors and Sockets
Jumper Setting Description
PSWD (default) Password features are enabled.
Password features are disabled.
RTCRST Real-time clock reset. Can be used for troubleshooting purposes.
jumpered unjumpered
Connector or Socket Description
AUX_LED Hard-disk drive LED connector
BATT Battery socket
CD_IN CD-ROM audio interface connector
RIMM_x RIMM socket
DSKT Diskette/tape drive interface connector
ENET Integrated NIC connector
EXT_SPKR External speaker connector
FAN Microprocessor fan connector
IDEn EIDE interface connector
INTRUSION Chassis intrusion switch connector
KYBD Keyboard connector
MONITOR Video connector
MOUSE Mouse connector
PANEL Control panel connector
PAR Parallel port connector; sometimes referred to as LPT1
PCIn PCI expansion-card connector
POWER_1 Main power input connector