The JBX05405 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents enterprise-grade networking infrastructure designed for demanding data center and high-speed network applications. This 1-meter cable delivers exceptional performance through its precision-engineered 30AWG twinax copper construction, enabling reliable 40Gbps transmission without compromise. **Key Features & Benefits:** Passive Direct Attach Technology: Eliminates external power requirements, reducing operational costs and system complexity while maintaining full 40G performance capabilities. The passive design ensures zero latency addition to your network backbone, critical for time-sensitive applications. Ruckus Compatibility: Specifically engineered to work seamlessly with Ruckus network infrastructure, replacing OEM part numbers E40G-QSFP-C-0101 and E40G-QSFP-QSFP-P-0101. Guaranteed compatibility ensures plug-and-play deployment. Robust Construction: Copper connectors with plastic jacketing provide superior signal integrity and durability. The twinax configuration minimizes electromagnetic interference, ensuring consistent performance in densely populated switch environments. **Technical Specifications:** Compliant with IEEE 802.3ba and SFF-8436 standards, this cable operates across industrial temperature ranges (0-70°C). It carries full RoHS, TUV, and UL certifications, meeting EU Directive 2002/95/EC requirements for environmental responsibility. **Ideal Applications:** Data center interconnects, enterprise network upgrades, high-frequency trading environments, cloud infrastructure, and media streaming platforms requiring sub-millisecond latency. **Warranty & Support:** 90-day limited warranty with free standard shipping on orders exceeding $99. Ships from strategically located warehouses in Danville, CA and Beaufort, SC for rapid delivery. Custom brand programming available for enterprise deployments. Invest in reliable, standards-compliant 40G connectivity with proven Ruckus compatibility and enterprise-level support.