Plug connector

A connector system is disclosed that can support high data rates over a connector with terminals on a 0.5 mm pitch. A plug connector can include two rows of terminals disposed on the opposite sides of a tongue. The tongue includes impedance notches aligned with terminals arranged as differential pairs. Ground terminals extend past the differential pairs and along the impedance notch. The invention also provides a plug connector. The base assembly of the plug connector includes a first terminal frame and a second terminal frame respectively securing the first row of terminals and the second row of terminals. The two row of terminals are arranged at a distance of 0.5mm and includes pairs of signal terminals surrounded by a plurality of ground terminals. The base assembly includes a plurality of ribs arranged along the body of the terminal; the ribs enables impedance resistance between the plurality of ground terminal and signal terminal to optimize the coupling of the plurality of signal terminals.