The JBX05083 is a premium-grade 1.5-meter 400GBASE-CR8 QSFP-DD to 8x SFP56 direct attach copper breakout cable, purpose-built for NVIDIA Mellanox network environments. This passive DAC solution eliminates the complexity and cost of active electronics while delivering reliable 400GB connectivity. **Key Features & Specifications:** This cable utilizes high-quality 30AWG twinax copper conductors enclosed in durable plastic jacketing, providing excellent signal integrity and electromagnetic shielding. The QSFP-DD connector interfaces directly with SFP56 modules through eight separate channels, enabling flexible port distribution without requiring additional adapters or active conversion equipment. **Performance & Compatibility:** Qualified to ETC 400GBASE-CR8 specifications and CMIS standards, this cable maintains full compatibility with NVIDIA Mellanox switching platforms and network interface cards. The 1.5-meter length provides optimal reach for typical rack-to-rack configurations while minimizing signal degradation. Operating temperature range of 0-70°C ensures reliable performance across diverse data center environments. **Reliability & Compliance:** Manufactured with RoHS and ELV compliance, this cable meets stringent environmental and safety standards including TUV and UL certifications. The passive design eliminates power consumption and heat generation, enhancing overall system reliability and longevity. **Applications:** Ideal for high-performance computing clusters, cloud infrastructure deployments, AI/ML workloads, and enterprise data centers requiring ultra-dense, low-latency connectivity. Perfect for organizations upgrading to 400G network speeds while leveraging existing port availability. **Why Choose This Cable:** As a certified compatible alternative to OEM part MCP7F80-W01AR30, this cable delivers OEM-equivalent performance at competitive pricing. Backed by a 90-day limited warranty and supported by expedited shipping from US warehouses, this solution combines reliability, compatibility, and value for demanding network environments.