Keep proven fiber infrastructure in service with an AddOn adapter designed as a comparable replacement for the Allied Telesis AT-2711FX/ST-001. Built around a single ST port and 100 Mbps throughput, it supports single-mode fiber links up to 2 km for environments that still depend on dependable, low-complexity optical transport. This is the kind of part procurement teams buy when uptime matters more than chasing a platform refresh. It fits legacy network segments, remote closets, and controlled industrial spaces where replacing the entire fiber path would add cost and risk without improving the application outcome. The ST connector keeps compatibility straightforward, while the 2 km reach gives you room to bridge buildings, floors, or separated equipment rooms. For teams maintaining mixed-generation infrastructure, this adapter helps extend the life of installed fiber without changing the operational model. It is a focused, purpose-built component for networks that need a stable replacement path, not a redesign.