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Thread: 24 Pin power connection. Need DC-DC solution!!!

  1. #1
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    24 Pin power connection. Need DC-DC solution!!!

    I have a 24 pin atx power supply connection on my motherboard, and a 5v (4 pin) i believe. I'm looking for a solution for power.

    I think the m2-atx is only a 20 pin. And i don't know if it has a 5volt connection.

    I currently use an inverter, and am thinking i want something hooked in to +12v accessory for the startup/shutdown controller.


    What dc-dc options do i have that are the most cost effective??? and easy to install. Im not a dummy, just lazy........

  2. #2
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    im an ***. i just saw a pic of the 4 pin connection on the m2-atx. excuse me for the brain fart...

  3. #3
    Neither darque nor pervert DarquePervert's Avatar
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    Actually, that 4-pin P4 power connector is 12v, not 5v.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  4. #4
    Constant Bitrate
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    the m2 atx has the 4p connector, and thats for the cpu, its not the missing 4 pins on your 20 pin connector, just buy a 20 to 24 pin converter, its like 6$, and you can get it at frys or even online on newegg

  5. #5
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    Ya i feel like a jack *** because as soon as i posted the original thread i googled a "24 pin to 20 pin", and what popped up? EXACTLY what i needed.

    do any of you guys run an external 2.5" drive off of usb using the M2-atx?

    I really want you guys to let me know if a m2-atx will work for me. I know theres power calculators out there, but i always like to get real world experiences from different people.

    I have:
    Intel Mobo 1.8ghz Pentium 4
    2 sticks of pc133 512mb (1gb total)
    ATI Radeon 9200 AGP vid card 128mb
    ATA 20gb 5200rpm 3.5" HD internal
    usb external DVD/CD-rom slim drive
    the occasional 80gb External 2.5" HD USB
    Small Targus 4-port usb hub.
    Occasional use of a usb WI-FI adaptor.
    GPS USB Antenna

    please guys, im so close to pulling the trigger on a m2-atx and needed some opinions from my fellow community of geniuses.

  6. #6
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    Just did a power calculator. Its saying at full load that i need around 200watts. give or take some.

    anyone with an opinion as to whether or not a m2-atx will work? please, im dying over here. my psu is the last peice of the puzzle to start making a custom plexiglas case for my carputer to be mounted in the trunk.

    Big ups mp3car.com

  7. #7
    Fusion Brain Creator 2k1Toaster's Avatar
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    Quote Originally Posted by CTcarPC View Post
    Just did a power calculator. Its saying at full load that i need around 200watts. give or take some.

    anyone with an opinion as to whether or not a m2-atx will work? please, im dying over here. my psu is the last peice of the puzzle to start making a custom plexiglas case for my carputer to be mounted in the trunk.

    Big ups mp3car.com

    200watts is a big hell no for the 160W M2-ATX.

    And just to let you know, those 20-24 pin connectors don't do anything. THey just make it look like something. All boards that have the 24 pin dock are compatable with the 20pin atx connector. You just will have 4 left over holes. Those 4 extra pins are to provide extra power for intensive CPUs. Unless you are using an Extreme Edition or P4 above 3.6Ghz, you really won't need it. If you just split the 20 pin ATX connector into a 24pin connector, you are just splitting the power, and doing nothing. Save your $5.
    Fusion Brain Version 6 Released!
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  8. #8
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    so i can take the 20 pin connector from the m2-atx, and plug it into the 24 pin connection on the motherboard?

    do i leave two empty pins on each side?


    or am i going to have to de-pin the 24-pin connection that i have already and put it on the harness that comes with the m2-atx?

  9. #9
    Fusion Brain Creator 2k1Toaster's Avatar
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    It only fits one way. You will have a 2x2 block of no connects usually on the right if the front is considered the part with the locking tab. It is keyed. Some are circular pins, some are square, and they are arranged in such a way that you can't screw it up.

    Just plug it in. Done.
    Fusion Brain Version 6 Released!
    1.9in x 2.9in -- 47mm x 73mm
    30 Digital Outputs -- Directly drive a relay
    15 Analogue Inputs -- Read sensors like temperature, light, distance, acceleration, and more
    Buy now in the MP3Car.com Store

  10. #10
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    awesome....

    So do you guys think that a m2-atx is sufficent to power a computer with my specs?

    Again, i know what the power calculators say, but there are always quarky things that happen with **** like this.

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