The JBX05114 2-meter 400GBASE-CR8 QSFP-DD direct attach copper cable represents an industry-standard solution for ultra-high-speed data center networking. Purpose-built for NVIDIA Mellanox environments, this passive DAC cable eliminates the complexity and latency associated with active solutions while maintaining exceptional signal integrity. **Technical Specifications:** This cable features 28AWG twinax copper conductors with precision plastic jacketing, delivering 400GB/s data rates across a compact 2-meter length. The QSFP-DD form factor provides dual-density connectivity, enabling maximum port density in modern switching architectures. Operating temperature range of 0°C to 70°C ensures reliable performance in controlled data center environments. **Compliance & Certifications:** Fully RoHS and ELV compliant, meeting EU directive 2002/95/EC environmental standards. Certified by TUV and UL for safety and performance, ensuring installation confidence. Qualified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards. **Compatibility & Applications:** Drop-in replacement for NVIDIA Mellanox OEM part numbers MCP1660-W002E26 and 980-9I35P-00W002. Ideal applications include hyperscale data centers, high-performance computing clusters, cloud infrastructure, and enterprise switching environments requiring non-blocking fabric connectivity. **Key Advantages:** Passive DAC technology eliminates power consumption and heat generation compared to active solutions. 2-meter length balances flexibility with minimal signal loss. Custom brand programming available for integration into multi-vendor environments. **Shipping & Support:** Ships from strategically located U.S. fulfillment centers (Danville, CA and Beaufort, SC) with free standard shipping on qualifying orders. Backed by comprehensive 90-day limited warranty covering manufacturing defects. Professional-grade packaging ensures damage-free delivery of this critical infrastructure component.