The Neutrik NO2-4FDW-1-A opticalCon DUO Chassis Connector is D-shaped, female, and works with both opticalCon and standard LC-Duplex connectors. The connector is dust and water resistant, achieving an IP65 rating when mated with a male connector, and using the included rubber gasket. Mounting the connector without the rubber gasket will save some space, but lowers the IP rating to 52.
It features a push-pull mechanism that has a built-in shutter with a silicone gasket that protects the optical connection from dust and dirt. It accepts standard LC connectors on the rear, which simplifies installation, and includes black, blue, and green color coded rubber seals that can be used to identify the fiber mode.