The JBX04985 Direct Attach Copper (DAC) cable represents a cost-effective, high-performance solution for 400GB network infrastructure deployments. As a Dell 470-AEVJ compatible replacement, this 2-meter 400GBASE-CR8 QSFP-DD to 2x QSFP56 breakout cable seamlessly integrates into existing enterprise environments while delivering exceptional reliability and performance. **Technical Specifications:** This passive copper cable features 26AWG twinax construction with durable plastic jacketing, designed to withstand demanding data center conditions. The QSFP-DD (Quad Small Form Factor Pluggable Double Density) connector provides the primary 400GB interface, while the dual QSFP56 connectors enable flexible breakout configurations for dual 200GB connections. Operating temperature range spans 0-70°C (32-158°F), accommodating standard and elevated data center environments. **Compatibility & Compliance:** Qualified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA/CMIS standards, this cable replaces Dell OEM part numbers 470-AEVJ, 470-AEVK, and 470-BCFG. Full RoHS, TUV, and UL certification ensures regulatory compliance across global markets, particularly EU directive 2002/95/EC (RoHS) requirements. **Key Advantages:** Direct attach copper technology eliminates the expense and complexity of active optics or transceivers, reducing total cost of ownership. The passive design requires no power, reducing energy consumption and cooling requirements. The 2-meter length optimizes switch-to-server connections in typical rack configurations, minimizing signal loss while maintaining maximum performance. **Applications:** Ideal for high-density data center environments, cloud infrastructure, HPC facilities, and enterprise switching solutions requiring 400GB interconnectivity. Perfect for Dell PowerEdge server deployments and compatible networking equipment. **Warranty & Support:** Backed by a 90-day limited warranty. Ships from conveniently located US distribution centers (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming available for enterprise deployments.