The FX11 series from Hirose is a 0.5 mm pitch connector series with a ground plate for high speed board-to-board connections. The FX11 is available in mating heights of 2 mm, 2.5 mm, and 3 mm. Transmission characteristics have been improved through a design that fixes ground plates to both sides of the header and receptacle. Signal and ground are arranged in a ratio of 10:1 with the ground plate connected to the board via SMT. The ground stability achieved serves to reduce noise. Metal fittings provide greater adhesion to the board, which protects the connector against shearing forces. The unique connector design provides a connection between the fitting and the ground plate for a stronger ground.