Hi, It looks like it overheats a bit if you use it for long periods.
It's intended to be used just while you are saving data to the console to save battery.
According to the author of the usb power cable, in a first version it used diodes and resistors to fit exactly 3v, but for some strange reason it didnt work.
Then it used a polimeter to see the voltage given by a standard AC adapter, and it was a surprise to see that when set to give 3v, the polimeter saw 5,5v or so (?)
so he dediced to remove the resistors and diodes.
If anyone could use a polimeter to confirm this ...
Aiken