Can I wire my all my case fans like this?

olender

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Apr 29, 2010
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I have 5 case fans that I need to connect. 1 of them only has a 3 pin connector so I'll likely have to connect that one to a compatible MB header. The rest of the fans have 4 pin molex connectors. I will be using this supplied PSU cable:

http://imgur.com/tiuV9AK

Can I connect all 4 molex connectors directly into each other to create one connected strip and then plug those into one molex connector coming off of the PSU cable? Will this be safe electrically and would there be any effect on certain fans not getting the same voltage as other fans?

Also, would it be okay to split it all up and plug two linked molex connectors into one of the molex cable connectors (in picture above) and then a separate two linked molex connectors into the next connector further down the PSU cable in the picture? Would all fans be receiving the same amount of voltage and running at the same speeds?

What is that last 4 pin (non-molex) connector for at the end of the PSU cable in the picture?

Hopefully I'm being clear enough without sounding too confusing. I just want to wire everything "electrically-correct" so there's no issues with voltage or things shorting out/not working due to improper connections.
 

Blankie440

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Jan 27, 2011
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The smaller connector at the end of the power cable is to supply power to a floppy drive. You can place the 4 molex adapters for the fans wherever you like as they will perform the same. They would be hooked up in what is known as a parallel wiring configuration where the voltage will not drop as you hook up each one. The voltage will remain constant. So short answer is: hook it up however it works best for cable management.
 

olender

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Apr 29, 2010
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Thanks, I just wasn't sure if I had two fans connected in parallel at the first molex node, and two more in parallel at the second separate molex node, if there would be any effect on how power is supplied. I didn't want some fans spinning slower than others because of improperly connecting them.