Chapter 2: Installation
2-21
2-6 Connecting
Cables
Power Connectors
A 24-pin main power supply connector(JPW1)
and two 8-pin CPU PWR connectors (JPW2/
JPW3) are located on the motherboard.
These power connectors meet the SSI EPS
12V specifi cation. See the table on the right
for pin defi nitions.
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
A . 2 4 - p i n AT X P W R
(Req'd)
B/C.8-pin Processor PWR
(Req'd)
A
B
C
Warning
: To prevent damage to
the power supply or motherboard,
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 motherboard. Failure in do-
ing so will void the manufacturer
warranty on your power supply and
motherboard.
(Required)
(Required)
