Morse-Code   |     home
XBOX 360 Mods   |   VGA / Composite Connector Mod   |   DVD Drive Mod I   |   Easy DIY DVD Drive Fix   |   ATX Power Supply Mod
ATX Power Supply Mod
I ended up doing this mod because I did not have a power supply for this XBOX 360 console I had been modding, I revived this console from an RROD problem and have been making modifications to it since....
The XBOX360 console has its own proprietary connector for its power source, with 8 pins, 3 of witch are 12 volts dc, one is 5 volts standby power and 3 are ground and one is the pin the switches the power supply on, this pin can also be used to turn an ATX power supply on or off!! The trick is getting a connector compatible with the xbox's power connector. I found just the thing for it, I found this device completely useless for what it's intended purpose.. I'm sure if you have an Xbox you have probably seen these things before.... This one was my oldest sons cooling for his console, but 2 of the motors seized up in the fans in about a month or so..... as usual, I saved for a better purpose....
Once I opened it up and salvaged the connectors from it, I was almost suprised when I seen they had wired it with the right color coding for the wires that matched a PC's power supply color coding..... yellow for 12 volts and black for ground..... but the manufacturers tried to pull a fast one!!! I noticed the red wire for the fans was actually wired to a black wire, not the yellow like I expected.... hmmmm, something doesnt seem right.... I did some poking around with a meter and found out they actually swapped the color coding to throw people off!! They had yellow for the ground and black for the 12 volts!!! That would have been bad if I didn't pay attention, I could have switched the polarities of the power going into the console!!! That would have been a lot of smoke to try and put back in! lol...
As you can see, there isn't much in the connector, just a lot of ground, a few 12 volts, a 5 volt standby, and the power enable pin.....
So now that I have the wires extended.... the Yellow will connect to the 12 volt source on the ATX 20/24 Pin connector, the Red (Standby power 5volts) will connect to the purple wire from the ATX 20/24 pin connector, the blue (Power enable) will connect to the Green wire on the ATX 20/24 pin connector. And the rest will connect to ground wires (Black).
This is what the connetion looks like on the power supply side, I had tapped into the ATX's 20/24 pin connetors wires, easy way would have been to salvage a 20/24 pin header from an old motherboard, and connect the wires to that so that way it would just plug into the ATX power supply with out any modifications to it.
I made up some extension cables to extend the wires a little longer, I conected one set to the ATX power supply, and the other to the XBOX360 power connector.

One thing you have to make certain, is that the ATX power supply has enough watts to provide power to the XBox, it has to have atleast 18+ amp current draw on the 12 volt rail, if it has less than 18amps, IT WILL NOT WORK! The XBOX 360 draws a minimum of 16 amps when powering up, it will put such a load on the ATX power supply, that it will blow out some capacitors and let out a whole lot of smoke that you will never get back in!!! (Trust me on this one, I know!)





Back to XBOX360 Main PAge