A memory card connector assembly (10) includes a pair of memory card connectors (12, 14) stacked together wherein an independent auxiliary alignment socket (40), which is aligned with but spaced from the connector housings (20), and directly mounted on the board (100), incorporates the contact tails (25) of the upper connector (12) for efficiently establishing electrical and mechanical connection between the upper connector (12) and the board (100) on which such memory card connector assembly (100) is seated.