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Thread: Wiring 2 fans to one header




  1. #1
    boondocks's Avatar
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    Default Wiring 2 fans to one header

    Have the CM 212+ CPU cooler and want to add another fan to it for a push-pull and see if I can suck a little more dust through the cooler fins.
    Looking around, I can't seem to find a wire hookup to put both fans on the single cpu fan header. All the Newegg wires I see so far won't work.
    Anyone got a link to what I'm looking for ?
    Thanks!
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  2. #2
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    Default Re: Wiring 2 fans to one header

    mmm I don't know about a wire kit, but I'm using arcticcooling F12 pwm fans, and these have a plug-through connector attached to them, and even a rpm wire you can connect to an other fan header, for monitoring the rpm.

    Wiring 2 fans to one header-arctic_cooling_f12pwm_3-jpg
    - Z68X-UD3H-B3(rev 1.3), bios F12
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    - Seasonic M12D SS850-EM , 850W Semi-Modular PSU with 80A at 12V.
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    - 19" LCD tv @ intel/onboard HDMI.
    - 4ch analoge speakers, cambridge dtt set.
    - internal spdif header connected to Geforce 0.
    - front usb connected.
    - front ac97 connected.
    - front cardreader (usb) connected.
    - rear 4x usb bracket.
    - ms media keyboard, ms comfort mouse. usb, wired.
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  4. #4
    boondocks's Avatar
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    Default Re: Wiring 2 fans to one header

    Thanks, guys. Curious Newegg doesn't have that-or at least I couldn't find it. Ah, found the Link Depot splitter at Newegg. I'll grab it and my fan and I'm in business.
    Last edited by boondocks; 02-29-2012 at 12:44 AM.
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  5. #5
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    Exclamation Re: Wiring 2 fans to one header

    Newegg.com - OKGEAR 12" 4pin PWM fan Y cable Model FC444PWM-12
    Newegg.com - OKGEAR 12" 4pin PWM fan Y cable w/ black sleeved Model FC444PWM-12BKS

    Read the user comments, the 4-pin splitter cable quality looks IFFY at best.
    Best bet is to check other sites for higher quality cables.

    If you're buying Newegg.com - Link Depot 3 Pin Fan Power Y Cable Model POW-ADT-3PY, you will need to do some creative surgery on both 3-pin male cable ends to connect each fan's 4-pin female connector to the splitter cable's male ends.

    Using a cable with exposed male ends can result in a short circuit if the exposed male end disconnects and touches any metal part of the computer case or motherboard.
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  6. #6
    boondocks's Avatar
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    Default Re: Wiring 2 fans to one header

    Thanks, Jim, I'll check it out.
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    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

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  7. #7
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    Default Re: Wiring 2 fans to one header

    Newegg loves me, or they should.
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    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
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  8. #8
    Lsdmeasap's Avatar
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    Default Re: Wiring 2 fans to one header

    Make it yourself, it's much cheaper and quicker! Even if you buy the pins, wires, and connectors, it's way cheaper than buying something like that.

    But I guess if you don't want to mess with doing it yourself, then buying a cable would be alright.

  9. #9
    boondocks's Avatar
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    Default Re: Wiring 2 fans to one header

    Quote Originally Posted by Lsdmeasap View Post
    Make it yourself, it's much cheaper and quicker! Even if you buy the pins, wires, and connectors, it's way cheaper than buying something like that.

    But I guess if you don't want to mess with doing it yourself, then buying a cable would be alright.
    I'm not sure which pins/wires do what. Which are voltage, which are signal, etc. I've manually wired two fans to one connector before but the way I did it looks kind of ghetto. Those little fan wires are a pain to strip.
    But you can edjamacate me, I'm always willing to learn!
    Maximus 8 Hero/6700K @ 4.8/4x4GB LPX @ 3200 15-17-17-36 CR1
    Case Labs SM8 w/dual pedestals / Custom water w/ acrylic pipe / Light box
    PowerColor 390Xw/EK block / Samsung 840 Pro 256GBx2 RAID 0 / 128GBx1 SSD's | 3 HDD's / DVD burner
    Dual Aquaero 5 Pro controllers for pumps & fans / FC9 for led's only 2xD5 pwm w/Bitspower tops - MCP35x2 - 3x480 rads/1x240 rad/AP15 fans / EK supremcy
    Seasonic Platinum 1000w custom fabbed/sleeved psu wiring by me

    Wifes: Z77X-UD5H / 3770K w/c with Raystorm copper block & 2 Rads/ Kingston HyperX RAM / Switch 810 case/ PowerColor AX7950 w/EK block
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  10. #10
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    Default Re: Wiring 2 fans to one header

    4 pins:
    1, black = -ground
    2, red = +power (12v)
    3, yellow = rpm sense
    4, blue = speed control (pwm)

    and in case of 3 pins
    1, black = -ground
    2, red = +power/speed control
    3, yellow = rpm sense

    (basic explanation mode)
    as you can see, the main difference is that 4pin separates the power supply from the speed control.
    the main difference in practice is that 4p fans allow better registration of low rpm's, where 3p fans start to produce bogus readings at low rpm.
    this is basically because in 4p the electronics reading the rpm are fed from the constant 12v, as opposed to the regulated line with 3p fans, once that line get's low the electronics don't like it, and produce off readings.
    - Z68X-UD3H-B3(rev 1.3), bios F12
    - I5-2500k [3148C059], cooled by scythe mugen2 rev.b with 1500rpm pwm-fan on cpufan header.
    - 8G(2x4G) Corsair Vengeance LP CML8GX3M2A1600C9W,Low profile/Low voltage, DDR1600/C9-1.35v. Slots 1&2.
    - 16G(4x4G) Samsung M378B5273DH0-CH9 1333 @ 2133-c11. w1.55v

    - Seasonic M12D SS850-EM , 850W Semi-Modular PSU with 80A at 12V.
    - 2x EVGA GeForce GTX285-1GB in SLi, 4x 6pin power and bridge connected.[PCIEX_16 and PCIEX_8]
    - Hauppauge HVR2200 PCIE 1x tv-tuner card.[PCIEX1_3]
    - Intel controller in raid mode.
    - 2x WD 500G blacks in raid0 on intel port 0-1.
    - 1x WD 1000G black on intel port 2.
    - 1x OCZ Vertex2 (32nm) on intel port 3.
    - 1x Optiarc DVDRW on intel port 4.
    - 1x Samsung 500G on marvell port 0.
    - 24" LCD monitor @ Geforce 0, lower HDMI port.
    - 17" LCD monitor @ Geforce 0, upper HDMI port.
    - 19" LCD tv @ intel/onboard HDMI.
    - 4ch analoge speakers, cambridge dtt set.
    - internal spdif header connected to Geforce 0.
    - front usb connected.
    - front ac97 connected.
    - front cardreader (usb) connected.
    - rear 4x usb bracket.
    - ms media keyboard, ms comfort mouse. usb, wired.
    - w7x64-sp1.



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