If you are upgrading a network switch or deploying fiber to the home (FTTH), you will inevitably face the connector choice: LC vs SC. While both are proven fiber connectors, they are not interchangeable on SFP modules. This connector landscape reflects how modern SFP deployments prioritize port density and. In BiDi modules, simplex LC offers several key benefits: As a result, LC has become the industry's default interface for 10G, 25G, and 40G duplex and BiDi modules in high-density environments. Choosing the wrong one can lead to costly restocking fees or project delays. 10G BiDi SFP+ Module: Near always LC simplex interface; supports lengths up to 80 km (for instance, 1490 nm/1550 nm), suited for backbone and metropolitan networks.