The JBX05473 3-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a cost-effective, high-performance solution for modern data center networking. Designed specifically for Extreme Networks compatibility, this cable delivers exceptional value for organizations deploying 40GB Ethernet infrastructure. **Technical Specifications:** This premium DAC cable features 30AWG twinax copper construction, delivering superior signal quality over short-reach connections. The passive design requires no external power or active electronics, ensuring straightforward installation and elimination of latency introduced by active components. Operating within 0-70°C temperature parameters, the cable maintains consistent performance across standard data center conditions. **Performance & Compatibility:** Qualified to IEEE 802.3ba standards, the JBX05473 achieves 40GB data transmission rates ideal for switch-to-switch and server-to-switch interconnections. Direct compatibility with Extreme Networks equipment provides seamless integration into existing infrastructure. The cable successfully replaces multiple OEM parts (40G-DACP-QSFP3M, 10313, 40GB-C03-QSFP, AA1404031-E6), offering flexibility for diverse deployment scenarios. **Compliance & Certification:** RoHS, TUV, and UL certifications ensure environmental responsibility and safety compliance. The cable adheres to EU Directive 2002/95/EC, meeting stringent international standards for restricted substances. This certification suite provides confidence in product reliability and regulatory acceptance globally. **Practical Advantages:** Passive DAC technology eliminates compatibility concerns associated with active adapters while reducing total cost of ownership. The 3-meter length accommodates standard rack-to-rack spacing in most data center layouts. Custom brand programming availability enables white-label deployment for service providers and resellers. **Applications:** Ideal for enterprise data centers, cloud infrastructure, high-frequency trading environments, and any deployment requiring reliable 40GB connectivity. The cable's robustness makes it suitable for demanding environments where signal integrity is paramount. **Warranty & Support:** Backed by a 90-day limited warranty and available from multiple U.S. locations (Danville, CA and Beaufort, SC) for rapid fulfillment. Free standard shipping on orders exceeding $99 provides additional cost savings.