The JBX05024 2m 400GBASE-CR8 QSFP-DD to 4x QSFP28 breakout DAC cable represents cutting-edge networking infrastructure technology designed specifically for high-performance data center environments. As a direct compatible replacement for the Arista CAB-D-4Q-200G-2M, this cable delivers enterprise-grade reliability with proven interoperability. **Technical Specifications and Performance** This passive breakout cable features robust 30AWG twinax copper construction with dual copper connectors engineered for maximum signal fidelity. The 2-meter length provides optimal flexibility for rack-to-rack and switch-to-switch connectivity without compromising transmission quality. Operating across the full 0-70°C temperature range, the cable maintains consistent 400GB throughput in diverse data center environments. **Standards Compliance and Certification** Fully qualified to IEEE 802.3bs standards, this cable meets QSFP-DD MSA and CMIS specifications required by modern networking equipment. RoHS, TUV, and UL certifications ensure compliance with international environmental and safety regulations, including EU directive 2002/95/EC. These certifications are critical for organizations requiring stringent compliance documentation. **Breakout Functionality and Architecture** The innovative breakout design converts a single 400GBASE-CR8 QSFP-DD port into four independent QSFP28 connections, enabling granular port management and flexible network topology design. This functionality is essential for organizations transitioning between 400GB and 100GB infrastructure or requiring mixed-speed network configurations. **Cost-Effectiveness and ROI** As a passive DAC solution, this cable eliminates expensive active transceiver costs while delivering comparable performance. Organizations deploying multiple high-speed connections benefit from substantial capital and operational savings compared to active optical solutions. The 90-day limited warranty and availability of custom brand programming provide additional business continuity value. **Deployment Applications** Ideal for enterprise data centers, cloud infrastructure providers, high-frequency trading firms, and organizations running bandwidth-intensive applications. Suitable for storage area networks (SANs), interconnect fabrics, and multi-tier switching architectures requiring reliable, low-latency connectivity. **Service and Support** Shipped from strategic US locations (Danville, CA and Beaufort, SC), this cable includes free standard shipping on qualified orders, ensuring rapid deployment. The 2-meter specification balances reach and signal integrity for typical data center patching distances.