3M DUPLEX MMF CABLE MTRJ/LC 62.5/125 FIBER. Tripp Lite's 3-meter multimode duplex fiber optic MTRJ/LC patch cable is manufactured from 62.5/125 zipcord fiber. The cable has MTRJ to LC connectors, a PVC jacket and is FDDI and OFNR rated. Duplex multimode fiber is most commonly used in LAN applications.