HAT GPIO Expansion Board + Cable For Raspberry Pi 2 Model B \/ B+ \/ A+The HAT GPIO Expansion Board is ideal for debugging your HAT projects or combining a HAT with other circuits.Features:HAT spec landing area with PCB standoffsIncludes 40 pin GPIO ribbon cableAll GPIO pins labelled with function、 BCM pin number、 physical pin numberRubber non-slip feet4 mounting holesPackage includes:1 x Expansion board w\/ install screws1 x 40-Pin data cable (20cm)Test photos for reference only、 the package does not contain testing modules: