This FC pigtail is a multimode cable with high-grade FC UPC fiber optic connector on one end, another end unterminated. The connector end is polished and tested under factory conditions, ensuring low insertion loss and high return loss. A Fiber Patch cord connects two devices. You plug it into a switch, router, or patch panel. It is typically used to connect fiber optic transceivers, fiber optic switches, fiber optic splitters, fiber optic. LC fiber optic pigtails are compact and pull proof design connections; LC is one of the most popular small form fiber optic connectors in the world. FC fiber optic pigtail supplied by.