Electrical connector having customizable circuit board wafers

The invention relates to an electrical connector of the type having multiple rows and columns of conductive elements for connection with a circuit board. An electrical connector includes a housing () and circuit boards () carried by the housing. The circuit boards extend parallel to each other in spaced-apart relationship. The circuit boards include signal tracks () that provide electrical paths through the connector. The electrical paths extend from a mating interface () at one end of the connector to a mounting interface () at another end of the connector. The circuit boards include a first type () and a second type (), the first type having circuitry arranged in a first pattern, and the second type having circuitry arranged in a second pattern which is different than the first pattern.