The JBX05004 400GBASE-CR8 QSFP-DD to QSFP56 direct attach copper cable represents the ideal solution for organizations seeking reliable, high-speed network connectivity in modern data center environments. Manufactured to exacting specifications, this 1.5-meter passive breakout DAC cable directly replaces NVIDIA Mellanox OEM part numbers 980-9IA3V-00W01A and MCP7H60-W01AR30, ensuring seamless integration with existing infrastructure. **Technical Excellence:** Built with 30AWG twinax copper conductors and premium plastic jacketing, this cable delivers industry-leading signal integrity for 400GB Ethernet transmission. The cable adheres to 400GBASE-CR8 specifications and QSFP-DD MSA standards, guaranteeing optimal performance across demanding applications. All components are RoHS and ELV compliant, meeting EU directive 2002/95/EC requirements and carrying UL and TUV safety certifications. **Key Advantages:** Unlike active alternatives, this passive design requires no external power, reducing operational costs and complexity while minimizing potential failure points. The compact form factor fits seamlessly into space-constrained equipment racks. Operating temperature range of 0-70°C ensures reliable performance in various deployment scenarios. Free standard shipping on orders exceeding $99 makes this enterprise-grade solution even more accessible. **Ideal Applications:** Perfect for hyperscale data centers, cloud service providers, enterprise networks, and high-performance computing clusters. The cable excels in server interconnect applications, storage area networks, and backbone infrastructure requiring sub-50-meter ultra-high-speed connections. **Quality Assurance:** Every cable is rigorously tested for compliance and performance. Custom brand programming is available for organizations requiring proprietary markings. Backed by a 90-day limited warranty, this product represents a trusted investment in network infrastructure reliability and performance longevity.