A conductive terminal assembly of an electrical connector is disclosed having a terminal aligning plate and four pairs of differential signal terminals. The terminal aligning plate made of a dielectric material. The four pairs of differential signal terminals are arranged in two columns in an array on the terminal aligning plate. Each terminal has a terminating end, a contacting end, and a terminal body. The terminal body extends between the terminating end and the contacting end. The terminal bodies of two first terminals in the same column, which are longitudinally adjacent to each other and have opposite polarities, are offset transversely.