User`s manual

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 specica-
tion. See the table on the right for
pin denitions. 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 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
Required Connections
12V 8-pin CPU PWR
PinDenitions
Pins Denition
1 through 4 Ground
5 through 8 +12V
A. 24-pin ATX PWR
B. 8-pin Processor PWR
A
B
F A N 4
Buttery
JD1
USB6
JWD1
JPL2
JPL1
JI2C1
JWOR1
JSMB1
CD1
J139
JWOL1
Mini PWR LED
LED6
JBT1
CPU2
J7
F A N 1
F A N 6
Floppy
FAN5
USB4/5
PWR I2C
KB/MS
USB0/1/2/3
COM1
VGA
LAN1/2
HD Audio
Slot5 PCI-E x4 (in x8 slot)
Slot4 PCI-E x8(in x8 slot)
Slot3 PCI 33MHz
COM2
S I/O
BIOS
Slot6 PCI-E x16
JI2C2
F A N 3
CPU1
LED5
Intel 5100
North Bridge
Intel ICH9R
South Bridge
LAN
CTRL
LAN
CTRL
Video
CTRL
Audio
CTRL
Buzzer
F A N 2
JPW2
JPW1
DIMM1B
DIMM1A
DIMM2B
DIMM2A
DIMM3B
DIMM3A
X7DCA-L
LED7
JF1
J8
USB7
JPG1
JL1
SATA0
SATA1
SATA2
SATA3
SATA4
SATA5