Externally a E2000 connector looks like a miniature SC connector. The connector is easy to install, with a push-pull latching mechanism which clicks when fully inserted. It features a spring-loaded shutter which fully protects the ferrule from dust and scratches. The shutter closes automatically when the connector is disengaged, locking out impurities which could later lead to network failure, and locking in potentially harmful laser beams. When it is plugged into the adapter the shutter opens automatically.