ADD-ADPT-LCFLCF-SD is a Fiber Optic Adapter, used in fiber optic links to provide a cable-to-cable fiber connection. Specifically, this adapter has two female LC connectors on one side, and two female LC connectors on the other. ADD-ADPT-LCFLCF-SD provides connection between two male LC SMF Duplex cables. _x000D__x000D_AddOn Adapters are 100% compliant for all of yAddOn networking needs. Now you have a cost effective solution to yAddOn network upgrade needs.