Dell OptiPlex GX300 - Manual (Page 38)

System Board Jumpers
Figure 4 shows the location of the jumpers on the system board. Table 1 lists the system board jumpers and their settings.
Figure 4. 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
27 Remote Wakeup power connector
28 Standby LED
29 Password jumper
30 Auxiliary hard-disk drive access indicator connector
31 RTCRST jumper
32 Battery socket
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