ATX Power Supply for an Xbox360 and Xbox 360 Cooling Mod!

This is my updated instructable on how i used a standard pc power supply for my XBOX 360. This is not my original idea, I saw a few different ways to do this on the internet but this is what I did and it worked for me. This is an easy way to avoid speanding money on a new or 3rd party 360 power brick and be able to power some pc fans for my new cooling mod.

I warn anyone who decides to use this instructable, if your power supply doesn't meet the minimum power requirements YOU WILL KILL YOUR XBOX !!!!!!

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Step 1: Power Requirements

Before you start cuting wires and buying things your going to want to know how much power your 360 needs. Turn your Xbox360 so you can see the back and look at the left side(from back). Right above the power plug is what you are looking for. My xbox360 elite uses 16.5 amps on the 12 volt rail and 1 amp on the 5 volt. The number you want to worry about is the 12 volt rail, this is what you will look for when choosing a powersupply. The supply i used supplies 25A on the 5V and 19A on the 12V.

Once you have found the power supply you will use, the next step is to connect your new power supply to your xbox360.

Step 2: Connecting the Power to Your 360

Now we need to plug the XBOX360 into its new power supply. To do this you will need:
*the xbox360 power brick

*new atx power supply or one you salvaged from an old computer

*electrical tape , scissors or knife

& for the cooling mod you will need:
*4X80mm or 70mm pc case fans

*zip ties or twist ties(wire covered in paper or plastic)

*some cardboard from a cerial box

Step 1: Take your 360 power brick and cut the power cord off. You can now keep the brick so you can destroy it later or just throw it in the garbage.

Step 2: Take the power cord you cut off the power brick and strip about 15cm(6')'of the gray insulation off exposing 8 wires inside: 3 black(ground), 3 yellow(+12v), 1 red(+5v) , and 1 blue. Strip about 10cm(4) of insulation off each of the wires EXCEPT THE BLUE WIRE! THE BLUE WIRE IS USED BY THE XBOX360 TO "TALK" TO THE 360 POWER BRICK, Then twist the 3 black wires together. Then do the same to the yellow wires.

Step 3: Take the atx power supply and cut off the 20/24pin connector, the 4pin or 8 pin motherboard connector and the 6pin or 8 pin PCI-E connectors and make sure all the newly exposed wires are untangled and cut the same length.

Step 4: Group the black(ground), yellow(+12v) and red(+5v) wires together. If the supply you choose does not have a switch you will need to keep the green wire and a black wire to make one. Cut the rest of the wires off till about 10cm(4) is left sticking out the back of the supply.

Step 5: Strip enough insulation off each of the wires so the wires of the same color can be twisted together. the final step is to twist the yellow wires of the power supply to the yellow wires of the XBOX360 power cord together. then use the electrical tape and covert wires so they are insolated from the others. Do the same with the black and red wires then cover all the wires in tape

Congratulations, you've just finished the hardest part of this instructable now onto the last step.

Step 3: Giving Life to Your Power Supply

Twist the green wire together with a black wire and the power supply will come to life, then hit the power button on the XBOX360 and game on!

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    41 Discussions


    well i guess i should be telling you the same thing!, the xbox will RROD it self before the power supply will die!

    I've had my 360 since 12:05 AM Nov. 22nd 2005 (Day of release).

    It took 4 years of extensive play before it finally RRoD'd on me.  I fixed it using the x-clamp fix method for less than $8.00.

    You fail.

    yeah my 360 lasted 2 years...then my second lasted 2 third will be dying any day now...too bad my ps3 has lasted since launch night ...i would dearly love to dump another $600 down them too.

    I think Xbox 360 is better, you can do alot of interesting mods in it, and the ps3 is 500$ so Xbox is cheaper and better, I've had mine for 2 years and it hasnt RROD yet, its modded.


    Reply 9 years ago on Introduction

    i see by your windows logo your bias but when was the last time you went to the store? and where, ps3 is 300-350. i smell microsoft XSS KISSER


    Reply 4 years ago on Introduction

    just to be honest they both suck as well as Nintendo they are not built
    to quality like when they first came out because they rush production
    to much now cause they have a name base which everyone knows so they
    know new consoles will sell no matter how crappy


    2 years ago

    I think you should've connected the 5 volt line into the xbox to the
    purple wire on the PSU, that is designated 5vSB (Stand by) which is
    what the 5 volt input is for, it's constantly as long as the PSU is
    plugged in running 5 volts up that line to the xbox's power logic, then
    if I'm not mistaken you connect the blue wire from the xbox to the green
    wire on the PSU, when you press the power button on the xbox it
    activates the logic and sends a message to the PSU telling it to power
    on by grounding it through the xbox. That way you don't need the
    external switch and it'll power like a normal brick does.


    4 years ago on Introduction

    It actually turns out that you can get away with using 3 wires, just use the yellow 12v, the red 5v and the black 12v ground, stick the yellow and the black into the middle holes. job done.

    i just used the 4 pin molex connector, but you still have to bridge the psu on/off on the main connector, or the psu wont turn on.


    8 years ago on Step 2

    Hi ps3_soldier. I'm using a 350W ps rated at 12V / 20A / 240W and 5V / 33A / 175W. I only spliced the wires feeding the molexes (total 4 black, 2 yellow, 2 red), leaving the 20-pin motherboard connector intact. My reasoning is that the wires in the xbox ps seem to be the same gauge or smaller than the molex wires in the atx ps, plus I didn't want to cut more wires than I needed to. The xbox starts fine, but eventually gets the red rings. Does my way not provide enough juice to the xbox and therefore the red rings? Will splicing the 20-pin connector help, or is there a problem with the atx ps? Thanks for your help.


    8 years ago on Step 3

    Just tried this yesterday and I was afraid of powering it on today, mine is a PAL xbox, and had 4 yellow 4 black cables. I also joined the green and black directly because I didn't have a switch at hand but it did turn on :D.
    Thanks man!

    Here's the pic, I dunno if you can see it but the button is greeeenz!


    8 years ago on Introduction

    Hey I have a few questions

    1. Is the yellow wires the only wires you connect from the PSU to the 360 cord?
    (For example: Black grouped wires(PSU) >>Connect>>Black Grouped Wires(xbox cable),
    : Red Grouped Wires(PSU)>>Conneect>>One Red Wire(Xbox),
    : Yellow Grouped Wires(PSU)>>Connect>>Yellow Gropued Wires (Xbox)


    Do you just connect the yellow Grouped wires(PSU To Xbox Cable)

    2. My power supply has a lot of black wires in the 24 pin connector is that normal.

    3. If the answer to number 2 is normal do you group all of the black wires together in one bundle(even the 4 pin connector black wires.