The invention relates to an electronic structure, including at least two functional components and at least one interconnection module (30) for exchanging signals between the functional components-A substrate (1) equipped with a first group of connectors called external connectors and a second group of connectors called internal connectors routed to the external connectors, the input and output of which are suitable for exchanging signals with the functional components;-The special card (2) is connected to the substrate through the internal connector, and comprises at least one functional component (32, 33, 34, 35, 36), and each component processes all or part of the signals passing through the special card.
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