The Mini and ProMini both have regulators.
The Promini regulator can be bypassed and the board supplied with 5V, I have about a dozen of them running that way, with an offboard 7805 supplying 5V to the Vcc pin.
The Mini and ProMini both have regulators.
The Promini regulator can be bypassed and the board supplied with 5V, I have about a dozen of them running that way, with an offboard 7805 supplying 5V to the Vcc pin.