Juniper QSFPP-40GBASE-ER4 QSFP+ 40GE ER4 | Routing, Optical

Support long-reach 40 GbE links with an optical module built for routing and data networking environments. The Juniper QSFPP-40GBASE-ER4 is a QSFP+ transceiver designed around 40GBase-ER4 Ethernet technology, giving infrastructure teams a compact way to carry high-speed traffic across optical fiber. Its LC connector keeps the interface familiar and practical for fiber plant already standardized on LC terminations. That matters in real deployments: fewer surprises during installation, cleaner interoperability planning, and a simpler path for network refreshes where port density and link reach both matter. This module is a strong fit for organizations that need a focused 40 GbE optic for optical network applications rather than a generic transceiver. The single-port design supports straightforward deployment in routing platforms, while the 1-year limited warranty aligns with enterprise procurement expectations for a specialized network component. For teams comparing optics, the value here is precision. You get a module purpose-built for 40GBase-ER4 routing use cases, not a broader part that compromises on fit or deployment clarity.