Fan header issue with my EX58-UD5

mogwai · 4 Oct 2010 at 22:31

I have just been checking over my build ahead of sticking the OS on it etc. The one issue I have is that when I plug one of my Akasa Apache Blacks into the SYS_Fan 2 (1 of the 2 4 pin headers), the fan spins up initally and then seemingly just sits there trying to start turning again.

The motherboard in question is a Gigabyte EX58-UD5. I have tried another Apache and the same thing happens. I have also ruled out the 4 pin extension cable that I have got to allow the fan cable to reach the header.

Initially I thought that it was the Smart Fan Control, so I went into the BIOS and turned it off but this made no difference.

Has anyone got any ideas?

mogwai · 4 Oct 2010 at 22:39

All I can see is that if Smart Control is on you can then use Auto, Voltage or PWM.

mogwai · 5 Oct 2010 at 08:37

Is the rocking motion of the fan how PWM keeps the fan when it thinks that it doesn't need to be used?

mogwai · 5 Oct 2010 at 13:10

From another thread in the cooling forum it seems that the issue is not PWM releated. The issue is that the SYS_FAN2 is only 5v rather than 12v.