User`s manual

Chapter 2: Installation
2-11
Power Connectors
A 24-pin main power supply
connector(JPW1) and one 8-pin
CPU PWR connector (JPW2) on the
motherboard. These power connectors
meet the SSI EPS 12V specifi cation.
In addition to the 24-pin ATX power
connector, the 12V 8-pin CPU PWR
connector at JPW2 must also be
connected to your power supply. See
the table on the right for pin defi nitions.
Warning: To prevent damage to the
power supply or motherboard, please
use a power supply that contains a 24-
pin and one 8-pin power connectors.
Be sure to connect these connectors
to the 24-pin (JPW1) and the 8-pin
(JPW2) power connectors on the
motherboard. Failure in doing so will
void the manufacturer warranty on
your power supply and motherboard.
ATX Power 24-pin Connector
Pin Defi nitions
Pin# Defi nition Pin# Defi nition
13 +3.3V 1 +3.3V
14 -12V 2 +3.3V
15 COM 3 COM
16 PS_ON 4 +5V
17 COM 5 COM
18 COM 6 +5V
19 COM 7 COM
20 Res (NC) 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 COM 12 +3.3V
12V 8-pin PWR Connector
Pin Defi nitions
Pins Defi nition
1 through 4 Ground
5 through 8 +12V
Required Connection
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
defi nitions.
Power Connector
The Power 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 defi nitions.
Reset Button
Pin Defi nitions
(JF1)
Pin# Defi nition
3 Reset
4 Ground
Power Button
Pin Defi nitions
(JF1)
Pin# Defi nition
1 Power
2 Ground
2-8 Connector Defi nitions