The Q400G-DAC4Q Passive Breakout DAC delivers a highly efficient and cost-effective way to split a single 400G QSFP-DD port into four independent 100G QSFP56 copper connections. Engineered for ultra-low-latency, short-reach links, this breakout cable is ideal for modern data centers, HPC clusters, AI infrastructure, and cloud-scale switching environments.
Built with premium twinax copper and precision breakout design, the cable provides stable PAM4 electrical performance, excellent signal integrity, and robust mechanical durability—making it a reliable replacement for short-range optical modules.
Key Features
• 400G QSFP-DD to 4×100G QSFP56 passive copper breakout
• Supports 400G PAM4 ? 4×100G PAM4 electrical lanes
• Zero power consumption and ultra-low latency
• High-performance twinax construction for superior signal quality
• Ideal for short-distance switch, server, and accelerator interconnects
• CMIS-compliant for seamless host management
• Available in multiple lengths (typically 0.5m–3m)
• Durable and flexible for dense rack environments
• Fully RoHS compliant
Applications
• Breakout of 400G switch ports into four high-speed 100G links
• GPU clusters, AI/ML training nodes, and HPC systems
• Top-of-Rack and End-of-Row architectures
• High-bandwidth server connectivity
• Cloud, hyperscale, and telecom data-center deployments