Keep critical 10 GbE links alive across extended campus and data center distances with this compatible 10GBASE-ER SFP+ transceiver from AddOn Networks. Built for single-mode fiber and 1550 nm operation, it is intended for environments where standard short-reach optics cannot cover the span. The ER specification is the right fit when you need stable transport over long runs without changing the switching platform. This module is a practical choice for infrastructure teams standardizing on SFP+ optics while preserving reach for aggregation, inter-building links, and remote equipment rooms. Its compatible design helps maintain procurement flexibility without forcing a full vendor refresh. For teams that value predictable optical performance and long-distance connectivity, it delivers the reach profile required for enterprise-grade uplinks. Use it where link distance matters more than port density alone: between buildings, across large facilities, or from core to distribution layers separated by substantial fiber runs. When the network design calls for 10 GbE over single-mode fiber, this transceiver gives you the optical budget and form factor to keep the path clean and manageable.