Patent ID: 7819684

Claim:
An electrical connector for accepting an edge of a circuit board having a notch and a plurality of circuit board electrical contacts disposed on the edge, the electrical connector comprising: an insulative housing that accepts the edge of the circuit board; a positioning protrusion integrally formed with the insulative housing, the positioning protrusion being at least partially receivable within the notch of the edge of the circuit board; and a plurality of contacts that are carried by the insulative housing and contact the circuit board electrical contacts; wherein the positioning protrusion comprises a lower portion that is less than or the same thickness as a width of the notch, an upper portion that is thicker than the lower portion and the width of the notch, and a middle portion connecting the upper portion and lower portion, and the middle portion having a thickness that changes symmetrically whereby the maximum thickness of the middle portion is larger than the thickness of the upper portion.