System Board Labels - Dell Precision 420 User Manual

Table 1. System Board Jumpers Settings
Jumper Setting Description
RTCRST
PSWD
NOTE: For the full name of an abbreviation or acronym used in this table, see the Glossary.

System Board Labels

Table 2 lists the labels for connectors and sockets on your system board and control panel and gives a brief description of their functions.
Table 2. System Board and Control Panel Connectors and Sockets
Connector or Socket
AUX_LED
BATTERY
CD-IN, AUX
RIMMA_2, RIMMA_4
RIMMB_1, RIMMB_3
FAN_SYS
FAN_CCAG
FLOPPY
HD_TEMP
IDEn
INTRUSION
KEYBOARD
LINE-IN
LINE-OUT
M_PWR1
M_PWR2
MT_PWR1
MT_PWR2
MIC-IN
Real-time clock and CMOS reset. Install a jumper plug on these pins for approximately 1 second to reset the
contents of the real-time clock and the CMOS. Do not leave the jumper plug installed.
Password features enabled.
Password features disabled.
Hard-disk drive access indicator connector
Battery socket
Analog audio input connector
Memory RIMM sockets on channel A
Memory RIMM sockets on channel B
System fan connector
Expansion card cage area fan connector
Floppy disk connector (34-pin)
Hard-disk drive temperature sensor connector (on control panel)
EIDE interface connector
Chassis intrusion switch connector (on control panel)
PS/2 keyboard connector
Line-in jack
Line-out jack
Desktop chassis power connector 1
Desktop chassis power connector 2
Mini tower chassis power connector 1
Mini tower chassis power connector 2
Microphone jack
Description