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5-8
Connector Definitions
Power Connectors
The proprietary power supply connector
(JPW1 and JPW2) meets the SSI (Superset
ATX) 20-pin specification. Refer to the table
below for the pin definitions of the ATX 20-pin
power connector. This connection supplies
power to the chipset, fans and memory.
Auxiliary Power Connector
A 4-pin 12V auxiliary power connector (J163)
is included to provide power to hard drive
disks. See the table below for pin definitions.
PW_ON Connector
The PW_ON connector is on pins 1 and 2 of
JF1. This header should be connected to the
chassis power button. See the table on the
right for pin definitions.
Reset Connector
The reset connector is located on pins 3 and
4 of JF1 and attaches to the reset switch on
the computer chassis. See the table on the
right for pin definitions.
Overheat/Fan Fail LED (OH)
Connect an LED to the OH connection on
pins 7 and 8 of JF1 to provide advanced
warning of chassis overheating or fan
failure. Refer to the table on the right for pin
definitions and status indicators.
Chapter 5: Advanced Motherboard Setup
Proprietary 20-pin Connector
Pin# Definition
1
GND
2
GND
3
GND
4
GND
5
GND
6
NC
7
12V
8
12V
9
12V
10
12V
Pin
1
2
3
4
Pin# Definition
1
2
Pin# Definition
3
4
OH/Fan Fail LED
Pin Definitions
(JF1)
Pin# Definition
7
Vcc
8
Control
5-13
Pin Definitions
Pin # Definition
11
PS_ON_N
12
5V_STBY
13
GND
14
GND
15
GND
16
NC
17
12V
18
12V
19
12V
20
12V
12V 4-pin PWR
Connector
Pin Definitions
Definition
+12V
Ground
Ground
+5V
Power Button
Pin Definitions
(JF1)
PW_ON
Ground
Reset Button
Pin Definitions
(JF1)
Reset
Ground
OH/Fan Fail
LED Status
State
Indication
Solid
Overheat
Blinking
Fan fail
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