This is an OM1 "Orange" multi-mode cable with a 62.5 μm core and 125 μm cladding diameter. The cable has color-coded Dual LC connectors on each end.The cable jacket is OFNR (Optical Fiber, Non-conductive, Riser) rated by UL, which means that it complies with fire safety and insurance requirements and is safe for use within the walls, and between the floors, of commercial class buildings.