2-14
X7SB4/X7SBE User's Manual
X7SB4
2-6 Connecting Cables
A. 24-pin ATX Power
B.8-pin Processor Power
B
A
ATX Power Connector
A 24-pin main power supply connector
is located at JPW1 and an 8-pin CPU
Power connector is located at JPW2 on
the motherboard. These power connec-
tors meet the SSI EPS 12V specifi cation.
For the 8-pin Power (JPW2), please refer
to the item listed below.
Processor Power Connector
In addition to the Primary ATX power
connector (above), the 12V 8-pin CPU
Power connector at JPW2 must also be
connected to your power supply. 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
Required Connection
12V 8-pin Power CPU
Connector
Pin Defi nitions
Pins Defi nition
1 through 4 Ground
5 through 8 +12V
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