All ProductsTe ConnectivityElectromechanicalConnectorsFiber Optic Connectors - Adapters TE CONNECTIVITY - ElectromechanicalConnectorsFiber Optic Connectors - Adapters 1-502781-3 MFR. Name: Te Connectivity 501049-1 COUPLER FIBER OPTIC CONNECTOR FSMA RECEPTACLE TO FSMA RECEPTACLE PANEL MOUNT, BULKHEAD MFR. Name: Te Connectivity 5501506-2 COUPLER FIBER OPTIC CONNECTOR FC RECEPTACLE TO FC RECEPTACLE PANEL MOUNT, SQUARE FLANGE MFR. Name: Te Connectivity