Jumpers – Dell OptiPlex GX400 User Manual
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Jumpers
System Board Jumpers
To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.
The following table lists the system board jumpers and their settings.
L_IN
Line-in connector
L_OUT
Line-out/speaker connector
MIC
Microphone connector
MICROPROCESSOR
Microprocessor with heat sink
MSE
PS/2 mouse connector
NIC
Network adapter connector
PANEL
Control-panel connector
PAR
Parallel port connector
PCIn
PCI expansion-card connector
POWER
Computer power connector
PSWD
Password jumper
RIMM_n
RIMM socket
RTCRST
Real-time clock reset jumper
SER
Serial port connectors
SPKR
Internal speaker
STANDBY_LED
Standby power light
STR
Suspend-to-RAM light
TAPI
Telephony connector
USB
Port 2 USB connectors (2)
USB2
Port 1 USB connectors (2)
VRM
VRM connector
NOTICE:
Ensure that your computer is turned off before you change a jumper setting. Otherwise, damage to your computer or unpredictable results may
occur.
System-Board Jumper Settings
Jumper Setting
Description
PSWD
(default) Password features are enabled.
Password features are disabled.
RTCRST
Real-time clock reset. Can be used for troubleshooting.
jumpered
unjumpered