400G QSFP56-DD CABLE

Lightx’s 400G QSFP56-DD transceiver-cable is a high-speed, integrated solution optimized for ultra-short-reach interconnects in hyperscale data centers, AI/ML clusters, and high-performance computing (HPC) environments. Combining a QSFP56-DD transceiver with a fixed-length passive copper (DAC) or active optical cable (AOC), it delivers 400Gbps full-duplex bandwidth using 8x50G PAM4 modulation. Designed for top-of-rack (ToR) and within-rack connectivity, it eliminates standalone optics, reducing power consumption, latency, and deployment complexity. The QSFP56-DD form factor ensures backward compatibility with QSFP-DD and QSFP28 ports via adapters, while supporting breakout configurations (e.g., 2x200G or 4x100G) for flexible integration into legacy infrastructure. Enhanced thermal management and a robust mechanical design enable reliable operation in high-density, high-temperature environments. Ideal for GPU/CPU clusters, storage networks, and cloud-edge deployments, it offers plug-and-play simplicity, cost efficiency, and scalability for future 800G/1.6T upgrades.