The JBX05046 400GBASE-CR8 direct attach copper cable represents the cutting edge of high-speed networking connectivity. Purpose-built for NVIDIA Mellanox environments, this 0.5-meter passive breakout cable delivers exceptional performance in demanding data center deployments. **Technical Specifications:** This cable features 400GBASE-CR8 configuration with QSFP-DD to 4x QSFP56 breakout architecture, enabling seamless integration between 400Gbps and quad 100Gbps equipment. The 30AWG twinax copper construction provides superior signal integrity and minimal crosstalk interference. Operating temperature range of 0-70°C ensures reliable performance in various environmental conditions. **Quality & Compliance:** Fully RoHS and ELV compliant with TUV and UL safety certifications, this cable meets EU Directive 2002/95/EC standards. Qualified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA/CMIS standards, ensuring compatibility with enterprise-grade infrastructure. **Key Advantages:** As a passive DAC solution, this cable eliminates power requirements and heat generation compared to active alternatives. The 0.5-meter length is optimized for high-density server racks and top-of-rack switch deployments. Direct copper-to-connector design minimizes latency and signal degradation. **Application Scenarios:** Ideal for data center interconnects, HPC clustering, AI/ML infrastructure, and cloud computing environments. Perfect for upgrading legacy 100G systems to 400G while leveraging existing 100Gbps equipment through breakout functionality. **Compatibility & Support:** Direct replacement for NVIDIA Mellanox MCP7F60-W00AR30 OEM part. 90-day limited warranty provides peace of mind. Free standard shipping on orders over $99, with fulfillment from multiple U.S. locations ensuring rapid delivery. **Care & Maintenance:** Store in cool, dry conditions within the 0-70°C operating range. Avoid excessive bending or strain on connectors. Regular inspection ensures optimal performance longevity.