Set Fan Control Switch to Normal

 
Set the Fan Control Switch to Normal.
 
At this position, the fan is always on.
 
The fan operates in silent mode (16dBA) up to 50% load, and then spins up faster as the load approaches 100%.
 
 
Notice the two slots for connecting the Motherboard Cable.
 
In addition, there are 5 SATA connectors, and 6 PCI-E connectors.