2-14
X7DCA-L User's Manual
2-5 Connecting Cables
ATX Power Connector
A 24-pin main power supply con-
nector is located at JPW2 on the
motherboard. This power connector
meets the SSI EPS 12V specica-
tion. See the table on the right for
pin denitions. For the 8-pin CPU
Power connector (JPW21), refer to
the item below.
Processor Power Connector
In addition to the Primary ATX power
connector, the 12V 8-pin CPU PWR
connector at JPW1 must also be con-
nected to provide adequate power to
your processors. See the table on the
right for pin denitions.
ATX Power 24-pin Connector
PinDenitions
Pin# Denition Pin # Denition
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 Connections
12V 8-pin CPU PWR
PinDenitions
Pins Denition
1 through 4 Ground
5 through 8 +12V
A. 24-pin ATX PWR
B. 8-pin Processor PWR
A
B