These are your twin CPU Cooler Fans connected via a Y-Cable to the CPU Fan Header.
Notice how the Motherboard automatically detects the CPU Fans as 4-Pin PWM controlled Fans.
Set the Chassis 1 Fan to Full Speed.
This is your Front Intake Fan #1.
Set the Chassis 2 Fan to Full Speed.
This is your Front Intake Fan #2.
Notice how the Motherboard automatically detects the Front Intake Fans as 3-Pin DC Fans.
Set the High Amp Fan to Standard Mode.
This is your Rear Case Fan.
Notice how the Motherboard automatically detects the Rear Case Fan as a 4-Pin PWM controlled Fan.
This completes your Fan Settings.
What is the reason for having two Front Intake Fans, when you have only one Exhaust Fan in the rear?
You want to build up positive air pressure inside the case. By having more air flowing into the case through the front filtered air vents, than air blowing out of the case, you will have less dust build up inside the case.
