Juniper EX-SFP-1GE-LX40K 1000Base-LX SFP | 40 km, Gigabit Ethernet

Move Gigabit Ethernet farther with the Juniper EX-SFP-1GE-LX40K. This 1000Base-LX SFP module is built for Juniper EX-Series Ethernet Switches and supports single-mode fiber for long-reach data networking where copper is not practical and link stability matters. With a 40 km reach, this transceiver is suited to distributed network designs that connect buildings, remote closets, or aggregation points across campus infrastructure. The 1-port SFP design keeps the switch footprint clean while preserving the flexibility to choose optical transport where distance and signal integrity are priorities. For teams standardizing on Juniper, this module helps keep optics aligned with the rest of the switching stack. It is a straightforward way to add long-distance Gigabit connectivity without overbuying bandwidth or moving to a larger platform than the network requires. A 1-year limited warranty provides a clear support baseline for production environments.