
Chapter 5: Advanced Serverboard Setup
5-13
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.
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.
5-9 Connector Defi nitions
Required Connection
Required Connection
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
Reset Button
Pin Defi nitions (JF1)
Pin# Defi nition
3 Reset
4 Ground
Power Button
Pin Defi nitions (JF1)
Pin# Defi nition
1 Power Signal
2 Ground
Secondary Power Connectors
JPW2 and JPW3 must also be con-
nected to the power supply. See the
table on the right for pin defi nitions.
Main ATX Power Supply
Connector
The primary power supply connector
(JPW1) meets the SSI (Superset ATX)
24-pin specifi cation. Refer to the table
on the right for the pin defi nitions of
the ATX 24-pin power connector. You
must also connect the 8-pin (JPW3/
JPW4) processor power connectors to
your power supply (see below).
+12V 8-pin Power
Pin Defi nitions
Pins Defi nition
1 - 4 Ground
5 - 8 +12V
Power Fail LED
The Power Fail LED connection is
located on pins 5 and 6 of JF1. Re-
fer to the table on the right for pin
defi nitions.
PWR Fail LED
Pin Defi nitions (JF1)
Pin# Defi nition
5 Vcc
6 Ground
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