IMO this is the most simple method.
All that is required is:
PC with PSU that has sata power plug.
Switch
2X Bit of wire
Xbox 360 dvd power cable
Something to probe with.
How to make:
Get your xbox 360 dvd power cord cut it in half.
(IMG:
http://img842.imageshack.us/img842/4987/dvdcable.gif)
Now cut off cable 3 and 4.
Now strip the ends of 5,7,9,11 and solder them all together.
Take a bit of wire and solder your probe to it.
Solder the probes wire into the soldered wires of 5,7,9,11.
Now solder all this to the
black sata power cable.
Tape it all up to keep it safe and away for the other cables.
Now solder your switch to pin 6 then solder a bit of wire to the other side of the switch.
Then solder this to the
orange sata power cable and tape it up.
Strip pin 8 and solder to
red sata power cable then tape it up.
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(optinal if you want a full function dvd drive that doesnt need to be turned off to boot windows)strip pin 12 and 10.
Solder pin 12 and 10 to
yellow sata power cable.
(if you dont care about full functions and will just be using to extract key while in jungle flasher)Cut off cable 12 and 10.
---
Now tape it all up so its not going to fall out or short on anything.
Any one thats intrested heres the pinout of the sata power cable.
black = earth
orange = 3.3v
red = 5v
yellow = 12v
And heres mine made used it to extract 15 keys so far. I didnt wire up the 12V so if the drive is hooked up while I boot windows it sits at the starting windows screen for 3 mins. But I dont plug the drive in in till iv started jungle flasher so iv got no problem there.
(IMG:
http://img705.imageshack.us/img705/9826/pic0228114.jpg)