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Another breadboard power supply designed by Seeed Studio. it can directly takes power from DC wall wart and outputs a selectable 5V or 3.3V regulated voltage. 

Compared to other breadboard power supply designs; this one provides mini-USB port like the seeeduino, you can toggle the switch and select your power source. (USB or dc jack). We also used JST-2pin power jack, the one as on Seeeduino.  

With this board, you can send power to both power lane of the breadboard, and each side has a on/off switch.