The most common types are APC, LC, PC, UPC. Fiber optic patch cords can be either OS1 Simplex or duplex. There are also multi fiber cable assemblies,Single mode and multimode fiber optic adapters.Standard fiber optic adapters are OS1 Simplex duplex and quad (for some types like LC and MU) structures, they are female to female type, used to link fiber optic connectors,sometimes also name them to be mating sleeves and hybrid adaptors, mating sleeves means this fibre optic adapter is used to connect the same type fiber optic connectors, while hybrid adaptors are the fiber optic cable Fiber Optic Patch Cord cable OS1 Simplex, Simplex, FC, LC, SC, ST... Directly Shopping Fiber Optic Cable terminated with fiber optic connectors on both ends. The polish of fiber connectors distinguishes the different connector types The gears of transmissions with a three-shaft design are distributed among two output shafts OS1 Simplex and OS2 which lie parallel to the input shaft IS It has two major application areas: computer work station to outlet and fiber optic Patch panels or optical cross connect distribution center.