I hope that new mac mini will not contain power brick inside the body. My 2011 mini is so loud when working.
That's the main reason why i want to update it. Another reason is i need USB 3.0 ports.
I think you are the first person wanting an external power supply. Apple always wants to get this into your machine to eliminate this inconvenient brick.
But I have to ask why would you like that? That power brick isnt making your mini louder under load you would gain nothing but an external brick. The cpu is the hot thing to cool in there not the supply