The JBX05320 5m 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents the ideal solution for organizations seeking reliable, cost-effective high-speed network connectivity. Specifically designed for Ruckus-compatible network infrastructure, this professional-grade cable meets the demanding requirements of modern data centers, cloud computing environments, and enterprise networks. **Technical Excellence and Certification** Engineered to exceed IEEE 802.3ba and SFF-8436 specifications, this cable delivers consistent 40GB/s performance. The 28AWG twinax copper construction with plastic jacketing provides superior signal integrity and durability in high-density rack environments. Multiple safety certifications—including RoHS, TUV, and UL—ensure compliance with international standards and regulations, including the EU directive 2002/95/EC. **Passive DAC Technology Advantages** Unlike active DAC cables or optical transceivers, this passive direct attach copper cable eliminates the need for external power sources. This design choice provides numerous benefits: reduced operational costs, decreased heat generation, simplified installation, and enhanced reliability. The cable operates efficiently across the full 0-70°C temperature range, accommodating diverse deployment scenarios from controlled data centers to challenging environmental conditions. **Seamless Integration and Compatibility** The QSFP+ to QSFP+ connector configuration ensures plug-and-play compatibility with Ruckus switching equipment and other standards-compliant network devices. As a direct replacement for OEM part numbers E40G-QSFP-C-0501 and E40G-QSFP-QSFP-P-0501, this cable simplifies procurement and reduces vendor lock-in concerns. **Ideal Use Cases** Perfect for server-to-switch connectivity, switch-to-switch interconnects, and storage area network (SAN) applications where high bandwidth and low latency are critical. The 5-meter length accommodates typical data center rack-to-rack distances while maintaining optimal signal quality. **Warranty and Support** Backed by a comprehensive 90-day limited warranty, this cable represents a dependable investment in network infrastructure. Manufactured in Vietnam and China using rigorous quality control standards, each unit undergoes testing to ensure performance specifications are met. Custom brand programming is available for enterprises requiring personalized solutions. **Logistics and Availability** Available for free standard shipping on orders exceeding $99, with distribution from Danville, CA and Beaufort, SC locations ensuring rapid delivery. The cable's compact 12x12x5 dimensional specifications optimize shipping efficiency and storage requirements.