3.3V and 5V MB102 Breadboard Power Supply Module provides a dual 5 V and 3.3 V power rails and has a multi-purpose female USB socket. The 3.3V/5V MB102 Breadboard Power Supply Module securely fits in a standard 400 or 800 tie points breadboard it also features reverse polarity protection, the module can take 6.5V to 12V input and can produce 3.3V and +5V. The module can also output 5V on USB connector or input through the USB connector. It’s a must-have product for experimenters those have to test/prototype electronic circuits on the breadboard.