The jumper connector is used to terminate simplex and duplex 1. A trigger and the standard latch make it easy to connect and disconnect. As a small-form-factor (SFF) interface, LC has become the default duplex connector in enterprise LANs, telco closets, and data-center topologies because it balances density, repeatability, and cost. Generally used in the ODF (the most used on MDF) SC Connector: connected to the GBIC module, its. LC Adapters and Cable Assemblies meet the growing demand for small form factor, high-density fiber optic connectivity with simplex, duplex, single-mode and multimode options. : 848 181 608 Issue 4 December 2001.