Question Molex fans to 4 pin won`t start, pls help :)

Aug 5, 2020
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Hello, i just build my first pc, i have a problem with the fans. My case comes with 6 fans, all of them use molex. My psu has a molex to 4 pin adapter, 2 molex and 1 4 pin. If i plug the fans to it, without using the 4 pin everything is good, 3 for each molex from the psu. If i connect the 4 pin to the mobo my pc wont start. I cant connect them to the mobo? Thank you very much for your help! :)
 
My psu has a molex to 4 pin adapter, 2 molex and 1 4 pin. If i plug the fans to it, without using the 4 pin everything is good, 3 for each molex from the psu. If i connect the 4 pin to the mobo my pc wont start. I can't connect them to the mobo?
Can you show any photos of your adapters/ how you're connecting them?
What are you calling 4pin? Floppy power connector? Do not connect that to motherboard!

 

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