i checked the manual and says 2 sys fan headers 1 is 4 pin and 5V other is 3 pin 12 V
altho I'm wored because the exhaust fan is far away from the 12 V pin, maybe the cable wont be long enough,
I can try plugging in one of the intake fans to the mobo and the other intake and exhaust into the 12 V adaptor plugs