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S
S
UPER
ERVER 5028R-WR User's Manual
5-8
Connector Definitions
Power Connectors
A 24-pin main power supply connector
(J24) and an 8-pin CPU power con-
nector (JPWR1) must be connected
to the power supply. These power
connectors meet the SSI EPS 12V
specification. See the table on the
right for pin definitions.
Warning: To provide adequate power
supply to the serverboard, be sure to
connect all three power connectors
to the power supply. Failure to do so
will void the manufacturer warranty on
your power supply and serverboard.
Secondary Power Connector
JPWR1 must also be connected to the
power supply. See the table on the
right for pin definitions.
Power Button
The Power On connection is on pins
1 and 2 of JF1. These should be con-
nected to the chassis power button.
This button can also be configured to
function as a suspend button (with a
setting in the BIOS - See Chapter 7).
To turn off the power when the system
is in suspend mode, press the button
for 4 seconds or longer. See the table
on the right for pin definitions.
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 definitions.
ATX Power 24-pin Connector
Pin#
Definition
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
NC = No Connection
+12V 8-pin Power Connector
Pins
1 - 4
5 - 8
Pin Definitions (JF1)
Pin#
1
2
Pin Definitions (JF1)
Pin#
3
4
5-14
Pin Definitions
Pin #
Definition
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
Pin Definitions
Definition
Ground
+12V
Power Button
Definition
Power Signal
Ground
Reset Button
Definition
Reset
Ground
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