there will be nothing special inside, the xbox controller cable is standard USB connection just with a propitiatory connector
i made a usb adapter out of the short part of a controller lead cut it and joined it with a female USB connector...
looks a bit rough with the electrical tape - however its solid inside
Works great, I originally made it for soft mods but it also works with most USB things, i plugged a USB hub into it and then a keyboard and mouse and they worked great with Linux