Preserve critical 100BASE-FX fiber connections with a transceiver designed for compatibility, compliance, and controlled network expansion. The AddOn AT-SPFX/2-AO provides a TAA-compliant alternative for Allied Telesis environments where procurement rules, interoperability, and lifecycle support matter as much as port speed. Built for Fast Ethernet optical networking, this SFP uses LC duplex connectivity and multimode fiber to support short-reach backbone, access, and edge deployments. It is a strong fit when you need to extend or replace an existing link without moving to a new switching platform. That makes it especially useful in regulated environments, distributed facilities, and campus networks where installed fiber plant is already in place. For teams managing mixed-vendor infrastructure, the value is straightforward: maintain service continuity while keeping sourcing flexible. AddOn’s compatibility-focused approach helps reduce downtime risk during refresh cycles and gives procurement a TAA-compliant option for projects that require it. When the goal is dependable transport for established Fast Ethernet fiber runs, this module keeps the path clear.