The JBX05464 3-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a cost-effective, high-performance solution for modern data center and enterprise network infrastructures. Specifically designed for Brocade-compatible systems, this cable delivers exceptional reliability and speed for bandwidth-intensive applications. **Technical Specifications:** This passive DAC cable features 30AWG twinax copper construction with plastic jacketing, providing excellent electromagnetic shielding and signal integrity. The dual QSFP+ connectors deliver industry-standard 40GB data transmission rates compliant with IEEE 802.3ba specifications. With a 3-meter length, it's perfectly suited for rack-to-rack and switch-to-server connectivity in compact data center environments. **Performance & Reliability:** As a passive direct attach cable, the JBX05464 requires no external power, eliminating potential points of failure and reducing operational complexity. Its proven twinax design minimizes latency while maintaining signal fidelity over the 3-meter distance. The cable operates reliably across temperatures from 0-70°C, accommodating both climate-controlled data centers and industrial networking environments. **Certifications & Compliance:** Fully RoHS and TUV certified, this cable meets EU directive 2002/95/EC standards and UL safety requirements, ensuring compliance with enterprise procurement policies and environmental regulations. It qualifies for IEEE 802.3ba and SFF-8436 specifications. **Compatibility & Integration:** Designed as a direct replacement for Brocade OEM part number 40G-QSFP-C-0301, integration into existing Brocade-based network infrastructures is seamless. Compatible with Brocade switches, routers, and compatible hardware supporting 40GBASE-CR4 connectivity. **Warehouse & Support:** Shipped from strategically located warehouses in California and South Carolina, this product qualifies for free standard shipping on orders over $99. Backed by a 90-day limited warranty and featuring custom brand programming availability for enterprise deployments. **Why Choose JBX05464?** While active cables offer longer distances, passive DACs provide superior cost-effectiveness for short-range, high-speed connectivity. The JBX05464's proven design, certified performance, and Brocade compatibility make it the intelligent choice for businesses optimizing data center infrastructure investments without sacrificing performance or reliability.