51
2
Hardware Installation
Power Connectors
Use a power supply that complies with the ATX12V Power Supply
Design Guide Version 1.1. An ATX12V power supply has a standard
24-pin ATX main power connector and a 4-pin +12V power con-
nector that must be inserted onto CN10 and CN9 connectors re-
spectively.
The 4-pin +12V power connector enables the delivery of more
+12VDC current to the processor’s Voltage Regulator Module
(VRM).
The system board requires a minimum of 250 Watt power supply
to operate. Your system configuration (CPU power, amount of
memory, add-in cards, peripherals, etc.) may exceed the minimum
power requirement. To ensure that adequate power is provided, we
strongly recommend that you use a minimum of 300 Watt (or
greater) power supply.
Important:
Insufficient power supplied to the system may result in instabil-
ity or the add-in boards and peripherals not functioning prop-
erly. Calculating the system’s approximate power usage is im-
portant to ensure that the power supply meets the system’s
consumption requirements.
A
B
C
1
Intel
ICH7R
BIOS
X
1 3
1
1 2 2 4
+3.3VDC
+3.3VDC
GND
+5VDC
GND
+5VDC
GND
PWR_OK
+5VSB
+12VDC
+12VDC
+3.3VDC
+3.3VDC
-12VDC
GND
PS_ON#
GND
GND
GND
N. C.
+5VDC
+5VDC
+5VDC
GND
+12V
1
2
4
3
Ground
Ground
+12V
X
