Fiber Optic Adaptor for SC connector simplex and duplex are available SC adaptors can be applied with patch panels, faceplates, and surface-mounted boxes. SC adapter also supports a rugged solution for LANs, public networks, storage area networks, and fiber-to-des. A fibre optic adapter, sometimes also called a coupler, is a small device designed to terminate or link the fibre optic cables or fibre optic connectors between two fibre optic lines. Originally developed by NTT and turned to practical use in 1986, SC. RS offer a wide selection of fibre optic adapters. They come in different. one of the most common solutions for reliable networks.