The JBX05087 400GBASE-CR8 QSFP-DD Direct Attach Copper Cable represents a high-performance solution for enterprise and data center networking environments demanding ultra-high-speed data transmission. This 2.5-meter passive copper cable is specifically engineered to be fully compatible with Arista networking equipment, providing a drop-in replacement for original equipment manufacturer part number CAB-D-D-400G-2.5M. **Technical Specifications** This cable features industry-standard QSFP-DD (Quad Small Form-factor Pluggable Double Density) connectors on both ends, supporting 400GBASE-CR8 protocol specifications. The 26AWG twinax copper construction delivers exceptional signal integrity while maintaining the passive design approach, eliminating the need for external power sources and associated latency concerns. **Performance & Reliability** Qualified to rigorous ETC 400GBASE-CR8 specifications and QSFP-DD MSA/CMIS standards, this cable ensures compatibility with leading data center switches and networking hardware. The passive DAC (Direct Attach Copper) architecture reduces operational costs and power consumption compared to active alternatives, while maintaining sub-microsecond latency. **Environmental Compliance** Manufactured to strict RoHS and ELV directives per EU directive 2002/95/EC, this cable meets global environmental standards. TUV and UL safety certifications provide additional assurance for enterprise deployment. The cable operates reliably across 0-70°C temperature range, suitable for diverse data center conditions. **Applications** Ideal for high-speed interconnects in 400GB networks, this cable serves: • Data center switch-to-switch connections • Server-to-storage fabric links • High-performance computing clusters • Cloud infrastructure deployments • Financial trading systems requiring low-latency connectivity **Shipping & Support** Ship from strategically located fulfillment centers (Danville, CA and Beaufort, SC) ensures quick delivery. Free standard shipping applies to orders exceeding $99. Every cable includes a 90-day limited warranty, reflecting manufacturer confidence in product quality and durability. **Why Choose This Cable?** This JBX05087 cable combines Arista compatibility, proven 400GBASE-CR8 performance, passive copper reliability, and competitive pricing. Custom brand programming is available for enterprise bulk orders, supporting OEM integration and white-label requirements. Whether upgrading existing infrastructure or building new high-speed networks, this cable delivers exceptional value.