Chapter 5: Advanced Serverboard Setup
5-13
5-8 Connector Definitions
Power Connectors
A 20-pin main power supply connector(JPW1)
and two 8-pin CPU PWR connectors (JPW2/
JPW3) on the motherboard. These power
connectors meet the SSI EPS 12V specifi
-
cation. In addition to the 20-pin ATX power
connector, the 12V 8-pin CPU PWR connec-
tors at JPW2/JPW3 must also be connected
to your power supply. See the table on the
right for pin definitions.
Warning
: To prevent damage to the power
supply or motherboard, please use a power
supply that contains a 20-pin and two 8-pin
power connectors. Be sure to connect these
connectors to the 20-pin (JPW1) and the two
8-pin (JPW2,JPW3) power connectors on the
motherboard. Failure in doing so will void the
manufacturer warranty on your power supply
and motherboard.
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.
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.
12V 8-pin PWR Connector
Pin Definitions (JPW2/JPW3)
Pins Definition
1 through 4
Ground
5 through 8
+12V
Required Connection
Reset Button
Pin Definitions
(JF1)
Pin# Definition
3
Reset
4
Ground
Power Button
Pin Definitions
(JF1)
Pin# Definition
1
PW_ON
2
Ground
ATX Power 20-pin Connector
Pin Definitions (JPW1)
Pin# Definition Pin # Definition
11
+3.3V
1
+3.3V
12
-12V
2
+3.3V
13
COM
3
COM
14
PS_ON
4
+5V
15
COM
5
COM
16
COM
6
+5V
17
COM
7
COM
18
NC
8
PWR_OK
19
+5V
9
5VSB
20
+5V
10
+12V
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