Case cable confusion

bricksquad312 · Jan 17, 2018

Heres a pic of EVERYTHING Im looking at.... I cant identify the purpose of the bottom 3 prong molex cable. The three 4 prong molex on the left are to each of my fans... the fans dont have any other connectors.

http://i68.tinypic.com/2u74ldk.jpg

What is that 3 prong molex for, and how do I plug it in? Or do I? Plug it direct to PSU? Plug into the daisy chain of fan molexs?

Thanks in advance!!!

BC_Homegrown · Jan 17, 2018

Hi, its kind of tough to make out in the picture where it goes. Have you tried to follow the wire to its component? It may be power for the fan hub, lighting, etc. Its hard to tell from the picture. What model case is that?

You *should* be able to daisy chain molex connectors no problem(unless there is a ton of them and you exceed the power limits of that rail on the PSU).

bricksquad312 · Jan 17, 2018

http://i66.tinypic.com/35k3ndj.jpg

Yes it connects to this small board on the tower... there are the fans that also connect to this board, and the white connector underneath the black one goes to the top of the case. Thank you for helping.

BC_Homegrown · Jan 18, 2018

Yes that would be the fan hub, that looks like a high end case. I have an NZXT 440 with a similar setup. The black is molex power to the hub and the white connects to one of the fan controllers on the motherboard. You can then have a bunch of fans connected to the hub and control all of their speeds with one setting in the bios or software.

Useful if you have pwm fans, but it sounds like yours are molex only so they are probably running full speed all the time, which isn't bad, just a little noisy.

bricksquad312 · Jan 18, 2018

Thanks for the reassurance.... so that 3 prong molex is power to the fan hub, yay!

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