A fiber optic adapter panel, also known as a fiber optic adapter plate or fiber optic adapter face plate, is a component used in fiber optic networking systems. It provides a physical interface for connecting and interconnecting fiber optic cables., two fiber connectors) such that light can reliably pass from one to the other with minimal insertion loss and maximum return loss. xceed TIA/EIA-568-C. LC and SC adapter housing colors follow the. All fiber adapter panels snap quickly into the front of fiber optic patch panels and enclosures for easy network deployment or moves, adds, and changesFiber optic adapter panels are used to hold individual fiber mating sleeves or fiber optic adapters.