Preserve critical server connectivity on existing SC fiber runs with a replacement adapter built for straightforward drop-in deployment. The AddOn AT-2911SX/SC-001 comparable adapter delivers 1 GbE performance through a single open SC port and supports links up to 550 m, making it a strong fit for environments where the fiber plant is already in place and uptime matters more than a full refresh. This model is designed for teams that need to extend the life of proven infrastructure without introducing unnecessary complexity. By matching the common Allied Telesis AT-2911SX/SC-001 form factor, it helps reduce migration friction while keeping network behavior predictable. That matters in server rooms, edge closets, and campus segments where replacing cabling or re-architecting the link would cost more than the adapter itself. Choose this adapter when you need a dependable, standards-based path to restore or expand fiber connectivity on a single server. It is a focused solution: no excess ports, no overbuilt feature set, just the right interface for environments that value compatibility, reach, and controlled spend.