Abstract: A system (600) is disclosed comprising an optical transceiver (610) and a portable device (620). The optical transceiver comprises a laser (612) configured to generate an optical signal and a port (614) operable to transmit an optical signal generated by the laser over an optical fiber connected to the port. The portable device comprises a video camera (622) and an optical display (624). The optical transceiver (610) is configured to transmit an optical signal containing connectivity information for an optical fiber connected to the port of the optical transceiver via the optical fiber. The portable device (620) is configured to receive the optical signal transmitted via the optical fiber using the portable device video camera, and to display the connectivity information contained in the optical signal on the portable device optical display. Also disclosed are a controller (1200, 1400) for an optical transceiver, a portable device (1300, 500), and methods performed by a controller and a portable device.