Do we know what the actual connector is called? make? model number?Is it some sort of latching variety of JST? Is it one of the standard pin spacings? 0.1"? 1mm? 1.5mm? 2mm?I was hoping that if Jim could identify what expansion shield board he is asking about, we could trace the connector type back from there.
According to page 79 on Jameco's catelog, it is called keyed shrouded headers and connectors. Parts 152734 and 152741.
It's that sort of connector (I think), and the "buckle" terminology seems to be the little clippy pressy-inny bit that locks it in place.