The LENOVO 45W4475 1GE Copper RJ-45 100m SFP is a compact, high-performance transceiver module designed for Gigabit Ethernet connections over copper wiring. This module facilitates the connection of a wide range of networking equipment via standardized RJ-45 connectors, supporting distances up to 100 meters. It is perfectly suited for extending network connections to remote areas of a building or campus without the need for fiber optic cabling. The 1GE Copper RJ-45 SFP is ideal for use in enterprise networks, data centers, and small business networks, offering a reliable, cost-effective solution for network expansions or upgrades. With easy installation and compatibility with a wide array of Lenovo networking devices, it is an essential component for achieving efficient and scalable network infrastructures.