This is an add on prototyping Pi Cobbler from Adafruit, which can break out all those tasty power, GPIO, I2C and SPI pins from the 26 pin header onto a solderless breadboard. This set will make "cobbling together" prototypes with the Pi super easy. Designed for use with Raspberry Pi 1 Model B AND Model A, both revisions. This will not work with the Raspberry Pi 2 or Model A+ or B+ or other newer versions.