Description
The Cisco QDD-2X400G-FR4 is a high-performance transceiver module designed for data center and high-speed networking applications. Built in the QSFP-DD (Quad Small Form-factor Pluggable Double Density) form factor, it supports two independent 400G FR4 optical lanes, enabling a total aggregate throughput of 800 Gbps. Each 400G channel uses four 100G wavelengths over single-mode fiber, compliant with the IEEE 802.3cu standard, offering efficient long-reach connectivity up to 2 kilometers. Its compact and hot-swappable design allows for easy deployment and maintenance in dense network environments.
This module operates over duplex LC connectors and utilizes advanced DSP (Digital Signal Processing) technology to ensure signal integrity and low latency. It supports PAM4 modulation and consumes less power compared to legacy solutions, making it suitable for energy-conscious network infrastructures. Designed to function in demanding enterprise and cloud-scale environments, it includes built-in diagnostics for monitoring real-time performance metrics such as temperature, voltage, and optical power levels. The Cisco QDD-2X400G-FR4 is an ideal choice for scaling bandwidth in spine-leaf architectures, inter-data center links, and high-capacity routing platforms.