More of a tip then mod. If you own a Iphone and have the little power supply that you can get for it. You can take your pc charger and plug it in to the iphone power plug and it charges quicker than the pc. I've use this for awhile now and works GREAT... Any phone charger that you can plug in a usb will work.
Just a FYI...
ED
I'm not sure I follow....what kind of power supply?