I just bought a P280 case. For some reason the 3 case fans, (2 on the top, 1 on the back) don't come on when I power up the system. I can't find a fan plug to plug into the fan header on the motherboard. Shouldn't there be one? I tried changing the fan speed with the switches on the back of the case, but that made no difference. My assumption is the fans should be running when the system power is on, regardless of fan speed setting.
The fan wires are all together and connect to the fan speed switches on the back wall of the case. I have tried following these wired to see if I could find an end to plug onto the motherboard, no success.
I am obviously missing something very basic, but don't know what it is. Can someone clue me about how these case fans connect?
Thanks