Too many fans?

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32andtwentyseven - 18 Jun 2007 12:59 GMT

Hi
I want to connect another case fan to my PC, but the 3 pin motherboard
socket is already used up by my VGA cooler controller. What shall I
do?

************

Thanks to anyone who helped me in my other thread (overheating).
I now have a lovely cool and quiet Zalman copper VGA cooler, which has
solved the problem. (Thank you to Paul for your recommendation.)

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Ray Rogers - 18 Jun 2007 13:25 GMT

> Hi
> I want to connect another case fan to my PC, but the 3 pin motherboard
[quoted text clipped - 6 lines]
> I now have a lovely cool and quiet Zalman copper VGA cooler, which has
> solved the problem. (Thank you to Paul for your recommendation.)

Fans also come with a regular Molex connector, you could use one of those.
If it is too noisy, there's a modification that can be done to change the
voltage to the fan.

Signature

Ray Rogers

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Paul - 18 Jun 2007 13:47 GMT

This adapter connects the fan to a Molex disk drive connector. Since
there is a male and a female 1x4 Molex, you can cascade these. For
example, if you connected four of these in a row, then connected
one end to the computer, you could power four fans.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812189119

As one reviewer noted, the male 1x3 mini fan header is dangerous.
You should fit the fan with the power off and make sure the 3 pin
female on the fan, is securely fastened to the 3 pin male. If they
ever come apart, the pin with +12V on it can brush against the
computer case, which is at ground potential. That would throw sparks
and short your power supply. So make sure the 3 pin part is covered,
before turning on the power.

This is what the adapter is supposed to do:

Molex +12V -------------------- To fan's +12V
GND -------------------- To fan's GND
GND ---X (Fan RPM signal is not connected)
+5 ---X

Paul

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