User`s manual

2-20
C7SIM-Q User's Manual
2-6 Connecting Cables
ATX/Auxiliary Power
Connectors
A 24-pin main power connector is lo-
cated at JPW1. This power connector
meets the SSI EPS 12V specica-
tion. See the table on the right for
pin denitions.
ATX Power 24-pin Connector
PinDenitions
Pin# Denition Pin # De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
A
B
JPUSB2
8-Pin Auxiliary Power Connector
In addition to the ATX main power, the
8-pin 12V power connector located
at JPW2 is also required to provide
power to the South Bridge, North
Bridge and all VRMs. See the table
on the right for pin denitions.
12V 8-pin Power Connec-
torPinDenitions
Pins Denition
1 through 4 Ground
5 through 8 +12V
A. 24-pin ATX PWR
B. 8-pin PWR
A
B