Parts/Test Point Locations  109
System Board Jumpers and 
Connectors 
NOTE: 
The blackened pin of a jumper represents 
pin 1. 
System Board Connector Functions
System Board Jumper Setting
Jumper/Settings Function
JP14
    1-2
    2-3
CMOS Setup
    *Normal
    Clear CMOS
Connector Function Connect to...
BT1 System battery 
connector
System battery
DIMM 1
DIMM 2
DIMM 3
System memory 
module connectors
Memory
FN1/FN2 Fan connector Processor fan
PCI 1
PCI 2
PCI 3
PCI slots Adapter cards
CN2 PS/2 keyboard and 
mouse connectors
Keyboard and 
mouse
CN3 USB connectors USB device
CN4 Parallel and serial 
connectors
Printer, parallel and 
serial devices