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CPU Cooling fan

cbcadmin
Grafter
Posts: 329
Thanks: 7
Registered: ‎14-02-2012

CPU Cooling fan

Can anyone confirm the pin outs on a cpu cooling fan please?

 

2 pin - +5v & ground

3 pin - +5v, +12v & ground

4 pin - +5v, +12v, ground & control/temp sensor

 

The reason I ask is because I have an HP server that has a 3 pin fan where the motherboard has a 4 pin socket. Two pins appear to be connected together! How would that work?


Keef- Sheerness Kent UK - Vodafone FTTP via THG3000 & Three via ZTE MF286D

Previously - NowTV, John Lewis, Shell Energy, Plusnet, Sky, EE, New Call Telecom/Fuelbroadband, Virgin/NTL/Bell Cable, Crosswinds, IC24, FreeOnlineNet, X-Stream, Totalise, Freeserve, Force9, TescoNet, AOL, Freenetname, Pipex, E7
2 REPLIES 2
MisterW
Superuser
Superuser
Posts: 15,426
Thanks: 5,947
Fixes: 423
Registered: ‎30-07-2007

Re: CPU Cooling fan

https://landing.coolermaster.com/faq/how-to-connect-a-3-pin-or-4-pin-fan-to-the-motherboard/

Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.

cbcadmin
Grafter
Posts: 329
Thanks: 7
Registered: ‎14-02-2012

Re: CPU Cooling fan

Thanks. I am still confused how/why the original fan is a three pin one, but the motherboard and indeed the fan has a four pin connector. I've replaced the fan with a four pin one, but despite spinning up, the motherboard reports a fault.

 

https://www.aliexpress.com/item/905600342.html?gatewayAdapt=Msite2Pc

 


Keef- Sheerness Kent UK - Vodafone FTTP via THG3000 & Three via ZTE MF286D

Previously - NowTV, John Lewis, Shell Energy, Plusnet, Sky, EE, New Call Telecom/Fuelbroadband, Virgin/NTL/Bell Cable, Crosswinds, IC24, FreeOnlineNet, X-Stream, Totalise, Freeserve, Force9, TescoNet, AOL, Freenetname, Pipex, E7