The JBX05015 represents a high-performance networking solution designed for modern data centers requiring reliable 400GB connectivity. As a direct attach copper (DAC) breakout cable, it eliminates the need for active components while maintaining exceptional signal quality and transmission speeds. **Technical Specifications:** This passive breakout cable features a 2-meter length with 30AWG twinax copper construction, specifically engineered for 400GBASE-CR8 applications. The QSFP-DD (Quad Small Form Factor Pluggable Double Density) to dual QSFP56 configuration allows network administrators to expand connectivity options without requiring additional hardware. Operating temperature specifications range from 0-70°C (32-158°F), making it suitable for standard data center environments. **Compliance & Certification:** The cable meets stringent RoHS (Restriction of Hazardous Substances) and ELV (End of Life Vehicle) directives, complying with EU directive 2002/95/EC. Safety certifications include TUV and UL approvals, ensuring workplace safety and reliability. Harmonization code 8544.42.9090 classifies it as telecommunications-grade infrastructure equipment. **Cisco Compatibility:** This cable directly replaces Cisco part number QDD-2Q200-CU2M, making it an ideal cost-effective alternative for organizations already invested in Cisco networking infrastructure. The cable maintains 100% compatibility with Cisco equipment supporting 400GBASE-CR8 standards. **Use Cases:** - High-speed data center interconnects - Server-to-switch connectivity in enterprise networks - Cloud infrastructure deployments - Storage area network (SAN) applications - High-performance computing environments **Advantages of Passive DAC Technology:** Unlike active optical cables, passive DAC solutions offer lower power consumption, reduced heat generation, and minimal latency—critical factors for performance-sensitive applications. The copper construction provides excellent electromagnetic compatibility while maintaining cost efficiency. **Warranty & Support:** Each cable includes a comprehensive 90-day limited warranty. The product ships from US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99, ensuring rapid deployment capabilities. **Custom Options Available:** Our team offers custom brand programming for enterprise customers requiring OEM integration and bulk purchases. Contact our sales team for volume pricing and customization details.