The JBX05311 5-meter 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an excellent solution for organizations seeking reliable, high-performance connectivity in data center and enterprise network environments. As a passive DAC solution, it eliminates the power consumption and heat generation associated with active optical alternatives, while maintaining exceptional signal integrity over moderate distances. Technical Excellence and Compatibility: This cable features 28AWG twinax copper construction with QSFP+ connectors on both ends, delivering consistent 40GB throughput performance. Full Intel compatibility ensures seamless integration with existing infrastructure, while compliance with IEEE 802.3ba and SFF-8436 standards guarantees interoperability across qualified equipment. The cable qualifies as a direct replacement for OEM part numbers CBL1-0600526 and XLDACBL5, simplifying upgrade and replacement scenarios. Robustness and Certification: Manufactured with RoHS-compliant materials and certified to EU Directive 2002/95/EC standards, this cable meets stringent environmental and safety requirements. TUV and UL certifications provide additional assurance of quality and reliability. The protective plastic jacketing safeguards the twinax copper core against physical damage and environmental contaminants. Operational Performance: With an operating temperature range of 0-70°C (32-158°F), the cable performs reliably across diverse deployment environments. The compact design facilitates installation in space-constrained equipment racks and chassis configurations. Value and Support: The 90-day limited warranty provides confidence in your investment, while custom brand programming options allow for organizational standardization. Free standard shipping on orders exceeding $99 enhances overall value. Ships from convenient US locations (Danville, CA and Beaufort, SC), ensuring rapid delivery to customers nationwide. Ideal Applications: Perfect for data center upgrades, SAN expansion, high-speed cluster interconnects, and any scenario requiring reliable 40GB connectivity without active electronics complexity or operational overhead.