Keep established fiber infrastructure running with an AddOn adapter built for compatibility with Allied Telesis AT-2711FX/SC-001 and AT-2711FX/SC-901 environments. It delivers 100 Mbps Fast Ethernet over a single SC port, giving teams a clean replacement path for legacy optical links that still serve important access, transport, or inter-building roles. This model is well suited to organizations that need to preserve the installed fiber plant while replacing aging hardware on a controlled budget. The SC connector is common in legacy optical deployments, and the single-mode design supports the kind of longer-reach links often found between wiring closets, equipment rooms, and distributed facilities. For infrastructure teams, the value is in continuity. You keep the existing topology, avoid unnecessary recabling, and restore service with a part that matches the operational profile of the original adapter. That makes it a practical choice when uptime, compatibility, and procurement efficiency matter more than a broader platform change.