Where to plug in Case Fans?

Solution
there are 2 sockets that say SYSFAN 1 and 2, 1 is just about the PCIe slot where the GPU sits, the other is just about the 24 pin power cable for the motherboard
There are two spare 3pin system fan headers on that board. One to the right of the Memory slots, it's just above the 24pin power connector. The other is imminently above the PCI-Express slot. BOTH THE SPARE FAN HEADERS ARE WHITE ON THAT BOARD.
 
I can recommend the sentry 3 from NZXT for a fan controller it has a full color touch screen and is only 35 bucks!
i got two of these the first one had a loose molex pin and didn't work but hey i didn't return it cause... its 35 bucks?
got another works great and looks amazing
 
it would plug directly into the PSU via a molex connection, then the fans will plug into it, letting you adjust the speed for when you are gaming, turned up, or watching netflix, turned down, with possibly a couple even off, not all off though
 


That specific fan controller requires a molex connector, most power supplies still have one or two spare, check the power supply first before you buy