Can I control fan type (silent, optimal, high) if my case fan is...

[Averagegai]

plugged directly into my mobo?

Also, if the fan specs says the connector is 3 to 4 pins, that means it'll work on either the 3 pin or the 4 pin connectors on my mobo, right?

Thanks.

 

[shovenose]

yep, correct
and yes you can still control the fans