The Q400G-DAC2Q Passive Breakout DAC provides a cost-effective and ultra-low-latency solution for breaking out a 400G QSFP-DD port into two independent 200G QSFP56 links. Designed for short-reach copper connections inside high-density data centers, AI clusters, and cloud infrastructure, this cable enables seamless connectivity between next-generation switches, routers, and high-performance compute nodes.
Using high-quality twinax copper and precision-engineered breakout construction, the cable ensures excellent signal integrity while maintaining low power consumption—making it a superior alternative to short-range optical transceivers.
Key Features
• QSFP-DD (400G) to 2× QSFP56 (200G) passive breakout
• Supports 400G ? 2×200G PAM4 electrical interfaces
• Ultra-low latency and zero power consumption
• Ideal for short-reach copper links in modern data centers
• Compatible with CMIS-based management interfaces
• High-performance twinax cable design
• Excellent signal integrity and mechanical reliability
• Available in multiple lengths (typically 0.5m–3m)
• Fully RoHS compliant
Applications
• Breakout of 400G switching ports into 2×200G
• AI/ML server clusters and GPU interconnects
• Top-of-Rack (ToR) and End-of-Row (EoR) architectures
• High-bandwidth switch-to-server and switch-to-switch connections
• Hyperscale and cloud data-center deployments