The JBX05302 40GBASE-CR4 QSFP+ passive direct attach copper cable represents an essential connectivity solution for modern data center infrastructures requiring high-speed, reliable performance. This 5-meter cable is purpose-built to meet the stringent demands of Extreme Networks equipment while delivering exceptional value and performance characteristics. **Key Technical Specifications:** This passive DAC cable operates at 40Gbps speeds, making it ideal for applications requiring substantial bandwidth without introducing additional latency. The 28AWG twinax copper construction provides optimal signal integrity while maintaining flexibility for dense equipment layouts. Each cable meets IEEE 802.3ba specifications, ensuring compatibility with certified network equipment and adherence to industry standards. **Performance & Reliability:** As a passive solution, this cable requires no external power, reducing operational costs and complexity. The copper-based construction delivers superior electrical performance compared to alternative technologies, with minimal signal degradation over the 5-meter span. Operating across temperatures from 0-70°C (32-158°F), the cable maintains consistent performance in various data center environments. **Compliance & Certification:** Full compliance with RoHS Directive 2002/95/EC and EU environmental standards ensures safe deployment in regulated environments. TUV and UL certifications provide additional assurance of quality and safety standards. These credentials make the cable suitable for enterprise deployments with strict compliance requirements. **Compatibility & Interoperability:** Designed specifically for Extreme Networks systems, this cable replaces multiple OEM part numbers including 40G-DACP-QSFP5M, AA1404032-E6, 40GB-C05-QSFP, and 10323. The QSFP+ form factor ensures compatibility with a wide range of network switching equipment. Custom brand programming is available for organizations requiring customized labeling or identification. **Installation & Support:** The cable's compact design (12x12x5mm) facilitates easy installation in congested equipment racks. Backed by a 90-day limited warranty, this product provides peace of mind with professional support. Free standard shipping on orders exceeding $99 makes bulk purchasing economical for IT departments and resellers. **Ideal Applications:** Perfect for data center interconnects, storage area networks, and high-performance computing clusters where 40Gbps connectivity demands reliability and cost-effectiveness. IT professionals appreciate the plug-and-play simplicity and the elimination of active cable management complexity.