Keep multimode fiber links stable with a hardened SFP designed for 850 nm Gigabit Ethernet deployments. The SFP-GMM-550 uses an LC connector and supports distances up to 550 m, making it a practical fit for access switches, aggregation links, and other fiber runs where multimode optics are the right economic and technical choice. This module is built for environments that need more than basic connectivity. The hardened design points to better tolerance for demanding infrastructure conditions, while the compact SFP format keeps installation simple in dense network hardware. For teams standardizing on multimode fiber, the 550 m reach helps cover campus and building-to-building links without moving to a more expensive optics tier. Advantech’s module is a focused choice for organizations that want predictable Gigabit performance, LC-based interoperability, and a transceiver that fits cleanly into established fiber architectures. It is a straightforward way to maintain link quality where uptime and consistency matter.