CorpCo MB102 Breadboard Power Supply Module 3.3V/5V for Arduino Board Solderless Breadboard For MB102 breadboard, two way independent control, can be switched to 0V, 3.3V, 5V. Input Voltage : DC 6.5-12V; Output Voltage : DC 3.3V 5V; Input do not exceed 700mA Locking ON / OFF Switch, no need to unplug the power adapter. LED Power Indicator indicated when the board is powered up. Comes with a quick guide to using the board