QDD-400G-FR4-S= Cisco 400Gb/s 400GBase-FR4 Single-Mode Fibre 1310nm 2km Duplex LC Connector QSFP-DD Transceiver Module

The QDD‑400G‑FR4‑S delivers exceptional 400Gb/s throughput over single‑mode fiber, enabling seamless, high‑capacity connectivity for demanding data center and enterprise networks. Designed with industry‑leading reliability, this duplex QSFP‑DD transceiver supports 2 km reach at 1310 nm, ensuring robust performance in long‑haul deployments. Its compact LC connector and low‑profile form factor integrate effortlessly into existing racks, while advanced thermal management and power efficiency reduce operational costs. Whether you’re scaling out cloud infrastructure, upgrading inter‑switch links, or meeting stringent bandwidth requirements, this module offers a future‑proof solution that combines speed, durability, and ease of deployment.