Chapter 2 Installation Instructions
14
661FX7MF/648FX7MF/648C7MF Series User Manual
Power Supply
This motherboard uses an ATX power supply. In order to avoid damaging any
devices, make sure that they have been installed properly prior to connecting the
power supply.
4-pin ATX_12V Power Connector: PWR2
The ATX power supply connects to PWR2
and provides power to the CPU.
Attention
You have to press the power button for more than four seconds if
you change the default “Instant Off” setting to “Delay 4 Sec” from the
“Power Button Override” option in the BIOS Power Management
Setup.
20-pin ATX power connector: PWR1
PWR1 is the ATX power supply connector.
Make sure that the power supply cable
and pins are properly aligned with the
connector on the motherboard. Firmly
plug the power supply cable into the con-
nector and make sure it is secure.
4-pin ATX_12V power connector
GND
GND
1 2 V
3
1
4
2
1 2 V
20-pin ATX power connector
1
11
3.3V
-12V
GND
-5V
5V
GND
GND
PS-ON
GND
5V
10
20
3.3V
5V
12V
5V
PWR-OK
3.3V
GND
GND
GND
5VSB
