The present invention relates to a positioning means for a fiber optic connector assembly, a fiber optic connector assembly and a fiber termination unit comprising the positioning means through which manufacturing tolerances can be absorbed to provide an improved optical interconnection with a high signal transmission rate. The positioning means (1) comprises a receiving means (5) for receiving one of a jack assembly or plug assembly (2) and a stationary support (6) supporting said receiving means (5), wherein the receiving means (5) is displaceable to a certain extent relative to the stationary support (6) at least along one direction other than a connection direction for optically interconnecting the optical fibers allowing an alignment of the receivable jack or plug assembly (2) along the direction transversal to the connection direction. A spring loaded element (8) resiliently urges said receiving means (5) away from the support (6) in one embodiment.