The LENOVO 45W4741 is a 1000B-LX GbE 1310nm 40km SFP transceiver, designed to provide reliable gigabit Ethernet connectivity over single-mode fiber for distances up to 40 kilometers. It operates at a 1310nm wavelength, a standard for long-haul transmissions, ensuring compatibility across a variety of networking equipment and infrastructures. This module is ideal for use in metropolitan area networks (MANs), extended campus networks, and in large-scale data centers requiring efficient, long-distance communication links. The SFP form factor makes it a versatile option, easily integrating into any SFP slot of switches, routers, and other network devices, enhancing the flexibility of network design and expansions. This product embodies Lenovo's dedication to high-quality network components, offering users a solution that combines durability, high performance, and compatibility, ensuring uninterrupted, secure data transmission across extended distances.