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connecting a MCP350 4 wire to a 3 wire fan header

post #1 of 2
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http://www.overclock.net/water-cooli...50-pinout.html

is my pump

it has a 6 pin connector in a straight line but only 4 wires are connecting to it

no clue how im supposed to use this....

im assuming it can be used on a mobo fan slot or something with a dif end but i dont want to run my loop with my mobo attached

rather connect it to a molex
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post #2 of 2
Well,my old 3 wire CPU fan(celron 775 socket) used to work fine in the 4 pin connecter.Only i could not adjust the speed.It would spin at full(may be not?) speed.
Also my 4 pin CPU fan (C2D 775 socket) works in the 3 pin connecter with constant speed.
IMO the 4th pin is for speed regulation (PWM-pulse width modification).If its not connected(either not present in the fan or the connecter) only loss is speed control.
Any corrections are welcome.
I refer connecter as the place where u connect your fan ON THE MOBO!

Edit:So i mean you should give it a try for sure.
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