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5-8
Connector Defi nitions
ATX Power Connector
A 24-pin main power connector is located
at JPW1. This power connector meet the
SSI EPS 12V specifi cation. See the table
on the right for pin defi nitions.
Processor Power Connector
In addition to the ATX main power, the
8-pin 12V power connector located at
JPW2 is also required to provide power
to the South Bridge, North Bridge and all
VRMs. See the table on the right for pin
defi nitions.
Power LED
The Power LED connection is located on
pins 15 and 16 of JF1. Refer to the table
on the right for pin defi nitions.
HDD LED
The HDD LED connections are located on
pins 13 and 14 of JF1. Attach a cable here
to indicate HDD activity. See the table on
the right for pin defi nitions.
Chapter 5: Advanced Motherboard Setup
ATX Power 24-pin Connector
Pin Defi nitions (JPW1)
Pin#
Defi nition
13
+3.3V
14
-12V
15
COM
16
PS_ON
17
COM
18
COM
19
COM
20
Res (NC)
21
+5V
22
+5V
23
+5V
24
COM
Processor Power
Pin Defi nitions (JPW2)
Pins
1 through 4
5 through 8
Power LED
Pin Defi nitions (JF1)
Pin#
15
16
HDD LED
Pin Defi nitions (JF1)
Pin#
Defi nition
13
+5V
14
HD Active
5-15
Pin #
Defi nition
1
+3.3V
2
+3.3V
3
COM
4
+5V
5
COM
6
+5V
7
COM
8
PWR_OK
9
5VSB
10
+12V
11
+12V
12
+3.3V
Defi nition
Ground
+12V
Defi nition
+5V
Ground
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