UDF series MTP-LC plug-and-play modules are used for splitting 12-core/24-core MTP adapters at the trunk path terminals into dual-core LC adapters. The dual-core LC adapters are placed at the front end of the module, and one/three MTP adapters are at its back. The built-in branching patch cords connect the front LC adapters with the back MTP adapters.This module can be easily installed in the UDF series rack-mounted fiber optic patch panel. It is used for the modular installation of the UDF series rack-mounted fiber optic patch panel. The patch cords that lead the trunk multi-fiber optical cables from the data center to electronic devices or customers' telecommunications outlets can provide terminal connection to realize structured cabling between trunk cables and the distribution area.