When the link has to travel beyond standard campus distances, this 10G ER SFP+ transceiver gives you the reach to keep the network connected. Rated for 40 km over single-mode fiber, it is designed for long-haul 10 Gigabit Ethernet deployments that need more distance than LR optics can provide. The LC connector keeps it aligned with common enterprise fiber infrastructure, while the industrial temperature designation makes it a better fit for harsher operating environments than standard office-grade optics. That matters in remote enclosures, edge facilities, and plant-adjacent network spaces where temperature swings can challenge ordinary transceivers. For teams standardizing on Extreme Networks platforms, this module supports a clean, direct optical path without adding media conversion or extra active hardware. It is the kind of optic you choose when the cost of a link failure is higher than the cost of the module itself. In long-reach designs, that margin matters.