[mythtv-users] Fancontrol with replaced CPU fan

[Simon Hobson]

Robin Hill wrote:

>  > The chassis fan uses a 3 pin header but fancontrol is able control
>>  that with PWM. However, my reading indicates that plugging a 3 pin fan
>>  into the 4 pin header will not work. I believe it will just run full
>>  blast all the time and won't have any PWM control. I am interested on
>>  opinions about my existing options or any better ideas.
>>
>I'm surprised this works with the chassis fan - the 3 pin connectors are
>power + speed feedback (not control).  I guess the motherboard allows
>the voltage to be controlled, which would alter the fan speed.

I'd assumed this was the way all fans worked in PCs - they do indeed 
vary the voltage to vary fan speed.

-- 
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.