To connect two fiber optic cables with SC and ST ends, you’ll need a coupler like the AD-SCM-STF-M. This adapter offers a convenient way to connect two fiber optic cables to extend the cable run. The adapter is manufactured from high-quality lightweight plastic for durability and long life. It supports a multi-mode fiber optics connection. Alignment sleeves ensure signal integrity and dust caps keep out contaminants and particles when the adapter is not in use.