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External Power Connector
In addition to the 24-pin main power con-
nector and the 8-pin auxiliary power located
at J41, the 4-pin External Power connector
at JP3 is used to provide power to external
removable devices such as add-on cards
installed on the PCI slots. This power con-
nector supports 12V and 5V devices.
Fan4
JPW1
24-pin PWR
LAN
CTRL
Intel 945GC
MCH
DIMM 1A
DDR2 Unbuffered Non-ECC 667/533/400 MHz
Slot6 PCI-E x8
LAN
CTRL
Slot5 PCI 33 MHz
Battery
Super I/O
COM2
Floppy
CPU Fan
8-pin PWR
CPU
JOH1
DIMM 1B
Speaker
SP1
Intel ICH 7
A
JBT1
JL1
SPI BIOS
J45
USB2
Fan3
USB3/4
J46
2-19
12V 4-Pin External
Power Connector
Pin Definitions
Pin
1
2
3
4
A. 4-Pin External PWR for add-
on card use
Fan1
JF1
Chapter 2: Installation
Definition
+12V
Ground 1
Ground 2
+5V
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