A daughter board (405) is provided for a prototyping system (100). The daughter board includes a first surface for facing a mother board (115) of the prototyping system, and a second surface opposed thereto. The daughter board further includes a connector (410) for a corresponding socket (210) of the mother board arranged on the first surface. The connector includes multiple elements (410t-410b), each one including an insulating support and multiple leads. The daughter board also includes multiple contacts (482) for corresponding functional terminals of a programmable device (420) arranged on the second surface. Each contact is connected to a corresponding lead (476) of the connector. The elements of the connector are arranged along the edges of a regular polygon.