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Thread: Fans With Controlers Connection Question

  1. #1
    2therock's Avatar
    2therock is offline Member
    Join Date
    Mar 2008
    N. GA US

    Default Fans With Controlers Connection Question

    Have a GA-EP35-DS3R motherboard.
    I just put in two Rosewill 120mm fans that came with controllers. Replaced the rear and added a front.
    The wiring harness on each controller has fan, board, and molex connectors.
    Right now I have just the molex and fans connected. Nothing to the mother board.
    I do not get a fan speed output to my hardware monitor. Just being cautions, I didn't pin them to the board in fear the board would try and override my controllers.
    Can I disable the thermal fan speed and get the RPMs to show up?

    Gigabyte GA-Z77X-UD5H WB Motherboard
    Intel Ivy Bridge i7 3770K clocked @ 4.5GHz
    16GB Kingston Hyper-X Genesis 2133 RAM
    Water cooling by XSPC RASA RS240 Kit
    Sapphire HD 6850 1GB DDR5 GPU
    1TB - RAID1 setup with Western Digital 6GB/Sec Drives
    Corsair HX750W Professional PSU
    Windows 7 Professional (x64) Build 7601

  2. #2
    Join Date
    Nov 2001
    Texas, USA

    Default Re: Fans With Controlers Connection Question

    If you have a fan(s) with both a Molex and a single yellow 3 or 4-pin connector block, then it will only be powered through the Molex. The other connection is for your motherboard fan header, which allows your mainboard to monitor fan speeds.

    Edit--- I may have been confusing... the single yellow port I was referring to will consist of a connector (usually white) and a single yellow wire coming from the fan. This monitors fan speed.
    Old age and treachery will overcome youth and skill
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  3. #3
    Join Date
    Sep 2008

    Default Re: Fans With Controlers Connection Question

    If you'll post your Rosewill part number, I'll try to figure out how to get the RPM signal back to a couple of your MOBO's fan headers...

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