2-Pin, Male COMBICON to 2-Pin, Female Screw Terminal Block Plug—The NI-9976 consists of a bag of 10 screw terminal plugs for any 3- or 4-channel 2-position screw terminal C Series module. These terminal plugs provide direct connectivity to the module. All C Series modules ship with the required connectors, so you can purchase the NI-9976 to reduce wiring on multiple devices or use for spare replacements.