Using a fan header on mobo to power a fan controller?

[wllmgrms]

Hey guys, had an odd question I really can't figure out myself.

Me and the guys I work with just built some new workstations. We have 3 case fans that need powered, but they are currently running through the fan controller on the case itself. The fan controller connection is a molex. And to prevent plugging in a molex cable to the PSU, we took a molex to 4 pin fan connector, and attached it to one of the fan headers on the mobo. Make sense so far?

My question:

Will the fan header provide enough power to the controller and all the fans to run properly? Or should we go ahead and use a molex to prevent problems? We haven't booted the systems up yet, but will be doing so today.

 

[Eximo]

Going to need the rating of the fan header and the total power draw of the three fans + controller.

I think the rule of thumb is two fans per header maximum, but really up to motherboard what they built it to handle.

If you just need 12V you can swipe a PCIe connector to power the controller.

 

[wllmgrms]

Ok. I'll check into it. I have a feeling it's probably too much of a power draw for 3 fans and a controller for all of them.

Thanks!