The Startech model 3986649000 fiber optic media converter is a device designed to extend and connect Ethernet networks via a multimode fiber infrastructure, offering a reliable and cost-effective solution to expand wired networks. This audio and data transceiver supports Gigabit Ethernet connections with a maximum speed of 1000 Mbit/s, compatible with 10/100/1000Base-T standards on the input and 1000Base-LX and 1000Base-SX on the output, enabling efficient conversion between RJ45 Ethernet cabling and fiber optic with LC connector. It is specially designed to extend network connectivity up to 550 meters using multimode fiber cabling at a wavelength of 850 nm, ideal for connecting remote workstations or expanding the backbone network in environments such as universities, companies, government agencies, and stadiums. Its black metal housing provides durability for prolonged use in professional settings. The device includes built-in LED indicators showing activity, link, and power status for real-time monitoring. Additionally, its compact, standalone design allows easy plug-and-play installation, with flexible mounting options including wall mounting to save space. This converter supports auto-negotiation to ensure compatibility with devices at different network speeds, and its multimode transceiver is removable, allowing optical module upgrades or replacements without changing the entire device. It operates with a universal input voltage range between 100 and 240 V, consuming 1 A and providing a stable 5 V output, adapting to various power configurations. Overall, the Startech 3986649000 converter offers a versatile and efficient technical solution for integrating and extending wired networks via multimode fiber optic technology, a key component for communication infrastructures requiring high speed, compatibility, and reliability over long distances.