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If you need a simple and stable power source for your breadboard projects, this board is here to help. Supply it with DC jack DC power or using UCB-C cable, and the board provides 3.3V, 5V or 12V directly to the power supply lines on the breadboard. Output voltages are adjustable seperately using the onboard switches. There’s a power LED, a power switch and an automatic voltage selection circuit, in case both power inputs are there.