The fans that come with the Scout have molex power connectors... in other words, they just receive power... not a signal from your motherboard/computer that is able to regulate the fan speeds.
I have a Scout and found the fan noise to be very tolerable. If you want to control the fan speeds, I think you'll either need to switch out the fans or be looking for some adapters that allow them to feed off the motherboard. http://www.cyberguys.com/product-details/?productid=3317
I have ABSOLUTELY no clue if that thing works like it should... I don't know of anyone that has used one, but that would allow you to plug your molex fans into your motherboard.