The third wire is for temperature monitoring. Since you do not have
that, the motherboard thinks that the fan that's connected is either not
running or malfunctioning. There are adapters out there (they ship with
most case fans) that allow you to plug a fan into a normal drive
connector. It's a "y" connector with a 4 pin power connector on one
end, and a 4 pin power connector and a 3 pin power connector on the
other end. Get one of these, plug the fan in that way, and problem
solved...
Ed
Mr Ter wrote:
>
> I have a P6DBE mob in a supermicro case. Unfortunately I had to change the
> power supply to a new one. The problem is that the moment I connect the
> power supply fan wire to the socket on the mob I get continuous beep. I've
> noticed that the power supply fan wire has only two wires where as the
> socket has 3 pins. Does anybody know what I can do to get rid off this
> beep. I'd like to get the PW connected so that its fan can be turned on.
>
> Thanks - Tom
>
>
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