A module optical elements (220a, 220a ') comprising at least one passive optical element, at least one fiber adapter (222a, ...., 222n, 222a', ..., 222n ', 201, 401, 1, ..., n), a power interface and a detection unit status, wherein: the passive optical element is configured to distribute and / or an optical signal processing can be performed even without power supply; fiber adapter (222a, ...., 222n, 222a ', ..., 222n', 201, 401, 1, ..., n), is configured to connect to a fiber connector and provide a port fiber for coupling a fiber; power interface (242) is connected to a power cable or power bus (230, 430) and is configured to provide a power cord or power bus unit status detection and drive state detecting (202, 304) if supplied, it is configured to respond to a change of connection status of the fiber in the fiber adapter and provide, at the output, a status indication indicating the port status fiber; wherein the state detection unit (202, 304) comprises a sensor (224a, .... 224n) and a status indication unit, wherein: the sensor (224a, .... 224n) is coupled to power bus and is positioned in a base casing or installation of the optical adapter and if power is supplied, a sensor parameter has a specific relationship regarding changes the connection state of the fiber in the fiber adapter and the unit status display is coupled to the sensor (224a, ..., 224n) and configured to detect a change of the parameter of the sensor and provide, at the output, the status indication indicating the port status fiber