What is SC and ST connectors?

 Connector types that are generally used for connecting fiber-optic cabling to networking devices. Both are recognized by the Electronic Industries Alliance/Telecommunications Industry Association (EIA/TIA) 568A standard.

SUBSCRIBER CHANNEL SC

This Connector is for structural cabling it is used for high speed And for single-mode fibre cabling

STRAIGHT TIP ST

This Connector is for structural cabling it is used for high speed And for Multimode fibre cabling

LUCENT CONNECTOR

LC connectors can be used with both single-mode and multi-mode cables.