The JBX05132 1-meter 400GBASE-CR8 QSFP-DD direct attach copper cable represents the latest in high-speed network interconnect technology. Purpose-built for enterprise data centers and cloud service providers, this cable delivers 400GB per second throughput in a compact, power-efficient package. **Technical Excellence** This passive direct attach copper (DAC) cable utilizes 30AWG twinax copper conductors to transmit low-voltage network signals with minimal latency and maximum reliability. The QSFP-DD (Quad Small Form-factor Pluggable Double Density) form factor enables exceptional port density, allowing network architects to maximize switch capacity without sacrificing performance. **Compatibility & Standards** Fully qualified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards, this cable integrates seamlessly with Arista networking equipment and serves as a direct replacement for Arista's CAB-D-D-400G-1M part number. This compatibility ensures plug-and-play installation with zero configuration requirements. **Regulatory & Safety Compliance** Manufactured to meet stringent international standards including RoHS (Restriction of Hazardous Substances) and EU Directive 2002/95/EC, this cable meets all environmental and safety requirements. TUV and UL certifications provide additional assurance of quality and reliability. **Performance Advantages** Unlike active cables that consume power and generate heat, this passive DAC technology offers superior efficiency for rack-mount installations. The 1-meter length provides optimal flexibility for inter-switch connections within standard data center rack configurations while maintaining signal integrity. **Reliability & Support** Backed by a 90-day limited warranty, this cable is manufactured to exacting specifications in Vietnam or China. Fast shipping from US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99 ensures rapid deployment. Perfect for network upgrades, new deployments, or expansion projects requiring reliable 400GB connectivity at enterprise scale.