The NorComp 4002-40-00-P3 is a D-Sub mini-combo connector that combines two signal lines, two power lines, and one ground line in a single connector. It has 40 pins and is sold with plastic housing, which is available in either right-angle or straight mounting. It is compatible with ribbon cables and can be used with a wide variety of cable sizes up to 4.5mm in diamter. This connector is typically used in applications such as industrial control systems, medical diagnostic equipment, and HVAC systems.