The Standard Edge II series Card Edge Connector onto printed circuit (PC) boards for use in electronic equipment. The connector is designed to connect a module PC board (daughter card) to a main PC board (motherboard). This connector is available in vertical, right-angle or straddle-mount configuration with through-hole, press-fit (compliant pin) or surface-mount contacts. Each connector has a double row of contact cavities with a centerline spacing of 2.54mm (0.100 inch). The connector is available with 6 through 140 positions. The connector is available with or without a pin 1 designation (an embossed triangle or square on the mating face of the connector). The connector feature omitted contacts for polarization to the PC board. Each connector features housing with a card slot which accepts 1.37 through 1.78mm (0.054 through 0.070 inch) thick daughter card. The connectors are available with or without a moulded key or inter-contact keying slots located in the card slot.