The JBX05264 40GBASE-CR4 QSFP+ passive direct attach copper cable represents enterprise-grade networking connectivity designed specifically for Extreme Networks platforms. This 10-meter twinax cable combines proven passive DAC technology with premium materials and rigorous engineering standards. **Key Features:** - **Form Factor:** QSFP+ to QSFP+ copper connectors - **Data Rate:** 40GB transmission speeds - **Construction:** 28AWG twinax with copper conductors and protective plastic jacketing - **Length:** 10 meters for flexible deployment options - **Standards Compliance:** IEEE 802.3ba, SFF-8436 qualified - **Certifications:** RoHS, TUV, UL certified **Technical Advantages:** Passive direct attach copper technology eliminates active electronics, reducing power consumption and heat generation while delivering consistent performance. The 28AWG gauge provides optimal signal integrity for 40GB transmission without sacrificing flexibility. Copper construction ensures superior conductivity and reliability compared to alternative materials. **Applications:** Ideally suited for data center interconnects, switch-to-server connections, storage area networks, and high-speed campus backbone deployments. The 10-meter length accommodates medium-distance runs within equipment racks and between adjacent networking infrastructure. **Operating Environment:** Supports temperatures from 0-70°C, making it suitable for standard data center and enterprise network conditions. Manufactured in Vietnam and China with international shipping from Danville, CA and Beaufort, SC locations. **Value Proposition:** Replaces OEM part number AA1404028-E6 while offering competitive pricing and rapid deployment. The 90-day limited warranty, combined with free standard shipping on orders exceeding $99, provides excellent cost-of-ownership. Custom brand programming available for volume deployments. This cable delivers enterprise reliability without premium pricing.