Adafruit pi t cobbler plus kit breakout gpio to breadboard for raspi a b or 2 adafruit 2028 the b t cobbler plus cable b is a fully assembled add on b prototyping board b kit that is specifically designed for use with the raspberry pi b and pi 2 and is also compatible with the a model the breakout board is t shaped making it easier to read the labels and a 40 pin ribbon cable is supplied that connects between the pi and the t cobbler giving access to the power gpio i sup2 c a