Plug-in card block, for indirect connection in accordance with IEC 603/DIN 41612, complete with guide rails, engagement catches and ejector, with standardized marking on both connection sides, as well as fixing screws M 4, cross section 0.2 - 4 mm² rigid / 0.2 - 2.5 mm² flexible, 1 A, 125 V, 64-pos.