Fan connectors on mobo

[Gianmaria Fontana di Sacculmino]

On my K8V se deluxe there are 3 connectors for fan: one is chassis fan
and it's OK, the second is cpu fan and it's OK too, the third is
called power fan: what should I connect to it?

 

[Rob Hemmings]

On my K8V se deluxe there are 3 connectors for fan: one is chassis fan
and it's OK, the second is cpu fan and it's OK too, the third is
called power fan: what should I connect to it?

That's for the PSU, if it has a fan sensor output (not many
PSUs have this). You can use it to connect to another 3-wire
case fan (maybe an intake fan at the front of the case) if
you want.
HTH

 

[RonK]

Some power supplies have an external wire lead that you can connect to the
motherboard pw fan connection. The motherboard will then read the fan
speeds of the power supply. Most power supplies now thermaly control their
fans .

 

[DaveW]

It's used by the PSU if the PSU has an rpm lead.

 

[Gianmaria Fontana di Sacculmino]

Thank you all. Fortunately my new enermax noisetaker has that wire.