edge board

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edge board An obsolete term for a circuit board that is a modular part of a larger circuit. The term edge card is often used synonymously but is sometimes considered smaller than an edge board. Connections between this module and other modules are made through a printed-circuit pattern on the edge of the board that mates with an edge connector. The edge connector is normally located on a backplane or motherboard, which contains wiring that ties all modules together.

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