The StarTech Gigabit Ethernet Single Mode LC Fiber Converter ET1000S40LC2 is a high-quality networking cable designed to convert Gigabit Ethernet signals to single mode fiber optic connections. With a transmission distance of up to 40km, this converter is perfect for long-distance networking applications. Compatible with the StarTech ET1000S40LC2 model, this converter ensures reliable and efficient data transmission for a variety of networking setups. Ideal for businesses, home offices, or anyone in need of a high-performance networking solution.