The JBX05440 2m Extreme Networks Compatible 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents the ideal solution for data center operators and enterprise IT professionals requiring high-speed, cost-effective network connectivity. This premium passive DAC cable delivers 40GB/s performance while maintaining industry-leading reliability and compliance standards. **Technical Specifications:** Constructed with 30AWG Twinax copper conductors and durable plastic jacketing, the JBX05440 combines superior signal integrity with rugged durability. The cable measures 2 meters in length, providing optimal reach for rack-to-rack and switch-to-server connections without introducing signal degradation. Featuring QSFP+ copper connectors on both ends, it ensures secure, low-loss connections in demanding environments. **Compliance & Certification:** This cable meets stringent international standards including IEEE 802.3ba and SFF-8436 specifications, guaranteeing compatibility with Extreme Networks equipment and other compliant devices. RoHS and ELV compliance ensures environmental responsibility and safety, while TUV and UL certifications demonstrate rigorous quality testing. Operating reliably across temperatures from 0-70°C (32-158°F), it adapts to various data center environments. **Why Choose Passive DAC Technology:** Passive DAC cables offer significant advantages over active alternatives, including zero power consumption, reduced heat generation, and lower total cost of ownership. The JBX05440 eliminates the need for external power supplies while delivering exceptional performance in short to medium-distance connections—perfect for modern high-density data center deployments. **Compatibility & Replacement:** This cable seamlessly replaces OEM part numbers 40G-DACP-QSFP2M, 40GB-C02-QSFP, AA1404029-E6-2M, and 10312-2M, making it an economical upgrade path for existing infrastructure. Extreme Networks compatibility ensures hassle-free integration without firmware updates or configuration changes. **Value & Support:** Backked by a 90-day limited warranty and available with custom brand programming, the JBX05440 represents professional-grade networking infrastructure. With free standard shipping on orders exceeding $99 and rapid fulfillment from Danville, CA or Beaufort, SC locations, obtaining this essential networking component has never been more convenient. Ideal for data centers, enterprise networks, and telecommunications environments where reliability and performance matter most.