Juniper QSFP+ 40G LX4 Transceiver, 40GBASE-LX4 | QSFP Modules

Keep 40 GbE links stable across longer fiber runs with the Juniper QSFP+ 40GE LX4 transceiver. Built for switching environments, this module is designed for 40GBASE-LX4 deployments where dense uplinks, predictable optical performance, and compatibility with enterprise network fabrics matter. LX4 optics are a practical choice when you need 40 GbE connectivity beyond short-reach multimode links. By using single-mode fiber and an LC duplex interface, this transceiver helps preserve port density while extending reach in structured cabling environments. That makes it a strong fit for aggregation layers, data center interconnects, and switch-to-switch uplinks where replacing fiber plant is not an option. For infrastructure teams, the value is in precision. You get a transceiver aligned to Juniper switching platforms, with the optical profile needed for production networks that cannot afford guesswork. Compared with lower-cost modules that may introduce compatibility risk or limited reach, this part is specified for the job it is meant to do: deliver dependable 40 GbE transport in demanding switching deployments.