Best way to connect chassis fans for 12V on each?

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QwarkDReams

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Mar 10, 2014
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Hey, everyone!

I'm kinda new to the whole self-assembled PC-thing, so I have a few problems which may seem ridiculous to you.

I have an ASRock H87 Pro4 MoBo and a Corsair 230T case which has already 3x 120mm fans pre-installed. All three of them are connected to the MoBo ( 2 each on a ch-fan header and 1 on a pwr-fan header).

I want to install 3 more fans (Corsair AF-series; not because I'm overclocking anything; it gets pretty hot during summer where I live) but I don't know how to power them so all 3 extra fans run with 12V.

Will a molex to 3pin adapter provide 12V to each fan or only 5/7V?
Does a splitter reduce the voltage? What would the max. number of fans be I could connect via a splitter to one chassis fan header?

What is the most efficient way for me?

Thanks in advance!
 
Solution
M
It would not matter which one as long as the fans get 12v. Motherboard ports will do this. And molex should. I would double check on the specific molex adapters as it could do 12 or 5v depending in the model
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QwarkDReams

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Mar 10, 2014
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Thanks for the fast response!

So, it doesn't matter if I connect them via a splitter to the MoBo or via one of these molex-to-fan adapters directly to the PSU?

And under what circumstances is the voltage reduced? (never been good in physics at school :-/ ).
 
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MFBLO96

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Dec 12, 2013
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It would not matter which one as long as the fans get 12v. Motherboard ports will do this. And molex should. I would double check on the specific molex adapters as it could do 12 or 5v depending in the model
 
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Solution
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MFBLO96

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Dec 12, 2013
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It would not matter which one as long as the fans get 12v. Motherboard ports will do this. And molex should. I would double check on the specific molex adapters as it could do 12 or 5v depending in the model

Oops, accidentally double posted
 
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MFBLO96

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Dec 12, 2013
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Each molex plug supplies 5,7, and 12 volts through the multiple wires. A device will draw from which ever wires it needs to get the required voltage.
A fan adapter will draw from the two lines neccesary to get 12v

All of the connectors can supply the 12v
 
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QwarkDReams

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Mar 10, 2014
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Just to make sure again (I just want to make sure I understand you):

If I connect them to the PSU with a molex-to-fan adapter there's no way the voltage will be reduced without an extra adapter? (so basically any molex-to-fan adapter will work except the ones that are for voltage reduction)
 
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