Juniper QSFP-DD QDD-2X400G-FR4-P 2X400G FR4 | QSFP-DD, Enterprise

Deliver two 400G FR4 links from a single QSFP-DD module and keep your fabric compact. The Juniper QSFP-DD 2X400G FR4 transceiver is built for dense network designs where port count, cabling discipline, and throughput all matter at once. By combining dual 400G connectivity in one optical package, it helps reduce module sprawl and supports cleaner scaling in high-capacity switching environments. This module is aimed at infrastructure teams that need more from every front-panel slot. LC duplex connectivity keeps the cabling model familiar, while the QSFP-DD form factor preserves density in platforms designed for high-speed aggregation and data center transport. FR4 optics are a strong fit when you want 400G-class performance with a deployment model that aligns to modern single-mode fiber architectures. For organizations building premium network fabrics, this transceiver offers a practical way to increase link capacity without expanding the physical footprint. It is the kind of component that earns its place in designs where bandwidth growth is constant and rack space is not.