There is no regulator within the gp32_console , in fact the transformer is a regulator. Basically if you use 5V power supply you will fry the delicate electronics in a faily short period because it is 66% more power than stated (usually electronic devices allow some tolerance on power supply that is why good rechargable batteries at 2.4V work in a 3V device). Try it and see if I am right :rolleyes: