On boards where there is a single power supply for the entire board, the MiniProg3 can, in some cases, supply power to the board. This supply is limited to approximately 200 mA, and is protected against excess current draw. The power supply voltage can be selected from one of 1.8V, 2.5V, 3.3V, or 5V. The 5V supply may be as low as 4.25V or as high as 5.5V, as it is supplied directly from the USB port.