The duplex fiber patch cord is OM4+ Signature Core with 1.6mm cable zipcord jacket. It is Plenum (OFNP), features LC Duplex connectors, has ultra low insertion loss and is 3 meters in length. This cord is Keyed D - Yellow LC Duplex on one end, non-keyed D - Yellow LC Duplex connection on the other end as part of a keyed cabling systems that provides an additional layer of physical security, mating only with matching keyed components. The cable jacket color is yellow.