AddOn"s 3M Single-Mode fiber (SMF) Duplex LC/LC Patch Cable is an economical solution which provides high bandwidth and transmission rates over longer distances. With LC to LC termination, this high-quality single-mode fiber optic patch cable is expressly designed for gigabit ethernet applications. The injection molding process provides each connection greater durability in resisting pulls, strains and impacts from cabling installs. Each cable is 100% optically tested for insertion loss before you take ownership. A pull-proof jacket design surrounds the popular 9/125 single mode fiber, immune to electrical interference.2PD6321. 6321. Addon - Network Upgrades Addon - Network Upgrades AddOncomputer dot com 3M Single-Mode Fiber (SMF) Duplex LC/LC Patch Cable.