PSU Fan Cable ?
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Posted by Frank on June 17, 2008, 6:02 am
Please log in for more thread options I've bought a brandnew Enermax Pro82+ 385W power supply unit. It has a two wire "Fan RPM (FM)"-cable coming out of it and I'm wondering, what it is for? (http://www.enermax.com/english/product_Display1.asp? PrID=97) Is that for signaling the psu fan's speed? And where to attach it? Also brandnew Gigabyte board seems to have no header for that?! Hints kindly appreciated Frank | |||||||||||||
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Posted by Paul on June 17, 2008, 6:24 am
Please log in for more thread options I have a fan monitor cable on my current PC. It is two wires and comes from the PSU. (Happens to have a blue and a black wire, on pin 1 and pin 3 of the connector.) The signals are an RPM signal and a ground signal. You connect it to an unused fan header. The hardware monitor on the motherboard, has to have RPM measuring ability, to make use of it. The ground signal is not required, and if they wanted, the cable only really needs one wire. (The power supply already has lots of ground connections.) Right now, MBM5 reports my power supply fan is running at 1541 RPM. If I start a game, the power supply ramps up to maybe 1700 RPM or so. The purpose of such things, is to detect fan failures, such as a stuck fan blade. For a currently supported software that reads out the hardware monitor, try Speedfan from almico.com . MBM5 is no longer supported. Paul | |||||||||||||
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Posted by Frank on June 18, 2008, 3:31 am
Please log in for more thread options > Frank wrote:
> > Hi there,
>
> > I've bought a brandnew Enermax Pro82+ 385W power supply unit. It has a
> > two wire "Fan RPM (FM)"-cable coming out of it and I'm wondering, what > > it is for? (http://www.enermax.com/english/product_Display1.asp? > > PrID=97) >
> > Is that for signaling the psu fan's speed? And where to attach it?
> > Also brandnew Gigabyte board seems to have no header for that?! >
> > Hints kindly appreciated
> > Frank >
> I have a fan monitor cable on my current PC. It is two wires and > comes from the PSU. (Happens to have a blue and a black wire, on > pin 1 and pin 3 of the connector.) The signals are an RPM signal > and a ground signal. You connect it to an unused fan header. The > hardware monitor on the motherboard, has to have RPM measuring ability, > to make use of it. The ground signal is not required, and if > they wanted, the cable only really needs one wire. (The power > supply already has lots of ground connections.) > > Right now, MBM5 reports my power supply fan is running at 1541 RPM. > If I start a game, the power supply ramps up to maybe 1700 RPM or so. > > The purpose of such things, is to detect fan failures, such as a > stuck fan blade. > > For a currently supported software that reads out the hardware > monitor, try Speedfan from almico.com . MBM5 is no longer > supported. > > Paul Paul, it's like you said, if I connect that cable to a 3-wire-standard-fan- header on the mainboard, BIOS signals the RPM of the PSU-fan. Thanks, Frank | |||||||||||||
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>
> I've bought a brandnew Enermax Pro82+ 385W power supply unit. It has a
> two wire "Fan RPM (FM)"-cable coming out of it and I'm wondering, what
> it is for? (http://www.enermax.com/english/product_Display1.asp?
> PrID=97)
>
> Is that for signaling the psu fan's speed? And where to attach it?
> Also brandnew Gigabyte board seems to have no header for that?!
>
> Hints kindly appreciated
> Frank