Keep 10 Gb links open across extended campus, metro access, and aggregation paths with the Extreme Networks 10GB-BX40-D SFP+ module. Built for single-fiber, single-mode deployments, it sends and receives over one strand to reduce fiber consumption without compromising reach. That matters when you are extending service to remote closets, linking buildings, or preserving scarce fiber pairs for other services. Rated for 40 km operation, this transceiver is suited to long-reach connections where standard short-range optics fall short. The bidirectional design simplifies plant planning and can lower the cost and complexity of new runs, especially in environments where conduit space, patch-panel density, or available fiber pairs are constrained. It is a practical choice for teams that need predictable 10 Gb transport over distance, not just a lower-cost optic. For infrastructure teams standardizing on Extreme Networks switching, the 10GB-BX40-D fits into a disciplined optics strategy: fewer fibers, longer reach, and a cleaner path from access to aggregation. When the link budget and physical plant both matter, this module gives you the reach to connect critical endpoints without overbuilding the cabling layer.