Extend 1 GbE connectivity over single-mode fiber with a transceiver built for access-layer links that need distance, consistency, and clean interoperability. This AddOn Networks module is compatible with the Allied Telesis AT-SPBD10-14 and is TAA compliant, making it a practical fit for public-sector and enterprise procurement environments where sourcing requirements matter as much as performance. Designed for 1000BASE-BX operation, it supports bidirectional fiber transport in a compact SFP form factor. That makes it well suited for switch-to-switch uplinks, distribution-to-access connections, and other point-to-point runs where copper is no longer the right medium. The single-mode design helps preserve signal integrity across longer spans, while the LC interface keeps installation straightforward in dense network closets. For teams standardizing on approved optics, this module offers a cost-conscious alternative to OEM-branded parts without forcing a compromise on deployment intent. It is the kind of component that belongs in spares inventories, rollout kits, and refresh projects where uptime, compatibility, and compliance all need to line up.