Electrical connector for a card reader

An electrical connector comprising:

• a housing, a card receiving mouth in the housing flanked by starter grooves in forwardly projecting housing arms on opposite sides of the mouth, electrical contacts carried by the housing in the mouth, prong receiving sockets on the housing flanking the starter grooves, guide arms on opposite sides of the mouth, a card receiving groove on each of the guide arms, a prong on each of the guide arms being constructed for locking engagement with any one of the sockets, and each of the sockets lockingly engage one of the guide arms only with the card receiving groove of the one guide arm being oriented to face toward a groove of another guide arm, allowing assembly of the guide arms to the housing whether or not the guide arms are inverted with respect to the housing, the guide arms comprising multiple pairs of guide arms stacked one pair on another pair, and first locking structures on respective first guide arms of said pairs interlocking with second locking structures on respective second guide arms of said pairs.