This Cobbler is in a compact shape, which is the least bulky way to wire up. The cable plugs between the Pi A /B /Pi 2 computer and the Cobbler breakout. The Cobbler can plug into any solderless breadboard (or even a prototyping board). The Cobbler PCB has all the pins labeled nicely so you can go forth and build circuits without keeping a pin-out printout at your desk. This will make it more fun to expand the Pi and build custom circuitry with it.