The JBX05075 400GBASE-CR8 QSFP-DD to 8x SFP56 breakout DAC cable represents a critical component for modern high-speed data center connectivity. This 2-meter passive direct attach copper cable bridges the generational gap between 400G switching infrastructure and existing 40G port-based systems, enabling efficient port density optimization without complete hardware replacement. **Technical Specifications:** This cable features a QSFP-DD form factor connection point delivering 400GB/s aggregate throughput to eight individual SFP56 ports, each capable of 40GB/s independent operation. The 28AWG twinax copper construction minimizes signal attenuation while providing excellent crosstalk immunity across all eight channels. Full compliance with ETC 400GBASE-CR8 standards and CMIS (Common Management Interface Specification) ensures seamless integration with modern network management systems. **Key Advantages:** As a passive solution, this cable eliminates power consumption requirements and associated heat generation, reducing operational costs and environmental impact. The 2-meter length provides flexible placement options for typical rack configurations while maintaining signal quality. NVIDIA Mellanox qualification guarantees compatibility with industry-leading switching platforms and network interface cards. **Reliability & Compliance:** RoHS/ELV directives and TUV/UL certifications confirm adherence to international safety and environmental standards. The cable operates reliably from 0-70°C, supporting diverse data center environments from standard air-cooled facilities to advanced cooling solutions. **Applications:** Ideal for enterprise data centers, service provider networks, and high-performance computing environments requiring flexible 400G to 40G port mapping. Common deployments include network disaggregation projects, legacy infrastructure integration, and multi-tenant cloud environments where granular port allocation is essential. **Support & Warranty:** Backed by a 90-day limited warranty with U.S.-based shipping from Danville, CA and Beaufort, SC locations. Custom brand programming available for OEM and enterprise customers requiring white-label solutions. The JBX05075 delivers professional-grade reliability at competitive pricing, supported by the MCP7F80-W002R26 OEM part number compatibility assurance.