The JBX05866 100GBASE-CR4 QSFP28 passive direct attach copper cable represents an optimal solution for organizations requiring high-speed, cost-effective connectivity in modern data center and enterprise network environments. With a robust 1.5-meter length and passive technology, this cable delivers straightforward installation without the complications associated with active connectivity solutions. **Technical Excellence:** This cable meets the rigorous 100GBASE-CR4 standard, delivering consistent 100Gbps performance with minimal signal degradation. The 30AWG twinax copper construction ensures superior electrical characteristics and signal integrity across the entire cable run. Engineered to IEEE 802.3bj specifications and QSFP28 MSA standards, this cable guarantees compatibility with Palo Alto Networks infrastructure and other enterprise-grade networking equipment. **Reliability & Compliance:** The JBX05866 undergoes comprehensive testing and carries multiple safety certifications including RoHS, UL, and TUV approval. It meets EU directive 2002/95/EC (RoHS) requirements, making it suitable for regulated environments. The cable operates reliably across a broad temperature range from 0 to 70°C (32 to 158°F), supporting deployment in various data center conditions. **Cost-Effective Performance:** As a passive DAC solution, this cable eliminates the need for external power supplies, reducing total cost of ownership and simplifying network infrastructure management. Unlike active cables, passive DAC technology provides lower latency and reduced power consumption—critical factors for high-performance computing environments. **Perfect For:** Data center upgrades, Palo Alto Networks firewall clusters, high-speed switch interconnects, server-to-switch connectivity, and backup/storage infrastructure where 100Gbps performance is essential. **What's Included:** The cable features QSFP28 to QSFP28 copper connectors, plastic jacketing for protection, and comes with a 90-day limited warranty. It ships from multiple locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99. **Direct Replacement:** The JBX05866 serves as a direct, cost-effective replacement for Palo Alto Networks original P/N PAN-QSFP28-DAC-1.5M, providing identical performance and compatibility at exceptional value. Custom brand programming is available for organizations with specific labeling requirements.