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5-9
Connector Defi nitions
Main ATX Power Supply
Connector
The primary power supply connector
(JPW1) meets the SSI (Superset ATX)
EPS 12V specifi cation. Refer to the ta-
ble on the right for pin defi nitions. You
must also connect the 8-pin (JPW2/
JPW3) processor power connectors to
your power supply (see below).
Processor Power Connector
JPW2 and JPW3 must also be con-
nected to the power supply. See the
table on the right for pin defi nitions.
Warning: To prevent damage to the power supply or serverboard, please use a
power supply that contains a 24-pin and two 8-pin power connectors. Be sure to
connect these connectors to the 24-pin (JPW1) and the two 8-pin (JPW2,JPW3)
power connectors on the serverboard. Failure in doing so will void the manufacturer
warranty on your power supply and serverboard.
Power Button
The Power On connection is on pins
1 and 2 of JF1. These should be
connected to the chassis power but-
ton. See the table on the right for pin
defi nitions.
Reset Button
The Reset Button connection 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.
Chapter 5: Advanced Serverboard Setup
ATX Power 24-pin Connector
Pin Defi nitions
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
Required Connection
Processor Power Connectors
Pin Defi nitions
Pins
Defi nition
1 - 4
Ground
5 - 8
+12V
Required Connection
Power Button
Pin Defi nitions (JF1)
Pin#
Defi nition
1
Power Signal
2
Ground
Reset Button
Pin Defi nitions (JF1)
Pin#
Defi nition
3
Reset
4
Ground
5-13
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
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