Fan wiring questions

ilikecake

Gawd
Joined
Feb 20, 2006
Messages
759
Hi

I recently got a bunch of Yate Loon 120mm fans. They have both a motherboard connector as well as a direct connection to the PSU's auxiliary line. I would like to run the fans off the power supply (at 7v), but I would also like the motherboard to be able to sense the fans. I tried running without plugging the fans into the board, but the board freaked out because it didn’t know that there was a CPU fan. Is it necessary/OK for all the cables (black, red and yellow) to be plugged into both the PSU and the motherboard, or should I only plug the yellow (RPM sensor) cable in to the motherboard?

On a side note: I just noticed that my Antec PSU with the fan sensing connector has both the RPM sense cable and the ground cable on the connector. Is this the proper way to plug the fan into the MB for RPM sensing only?
 
ok... Yellow wire ONLY to the motherboard...

Red and black wires to the yellow and red lines of a molex (in that order) :)
 
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