2017 bump mainly because I keep forgetting to ask @ttsgeb about xboxen internal power supplies; if he has an extra one and how2 know which version I need
I have some that aren't in use, but no good way of getting to them. The only way to know what you need is by cracking the box open and physically looking at it. I'm about 85% sure there's a way to hook up a 360 power brick to an xbox, I just haven't wired it up yet.