This connection port works with most Bernini Fountains that don't have lights. It has 3 connection ports - Blue, Grey and Black.
Blue: ABCD Button
Some Fountains that it is compatible with:
Roma, Capri, Milano/Milan, Florentina, Enchanted Maiden, Crane, Perla, Genova, Garden Self Watering Planter with Fountain, Modern Twist/Contemporary Water Feature, Wall Fountain, Piazza, Amore