The JBX05682 4-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents the optimal choice for organizations seeking reliable, high-speed datacenter interconnectivity without the complexity and cost of active optical solutions. **Superior Design & Construction** This passive DAC cable features premium 26AWG twinax copper construction that delivers consistent signal integrity across the full 4-meter length. The dual-twinax design provides superior electromagnetic shielding, ensuring clean signal transmission in electrically noisy datacenter environments. The protective plastic jacketing guards against physical damage while maintaining flexibility for tight routing scenarios. **Intel Compatibility & Standards Compliance** Qualified to IEEE 802.3bj specifications and fully compatible with Intel networking equipment, this cable meets the exacting demands of enterprise infrastructure. RoHS and TUV/UL certifications confirm compliance with international safety and environmental standards, providing peace of mind for regulated industries and sustainability-conscious organizations. **Performance Advantages** As a passive solution, this cable requires no power supply or complex electronics, eliminating potential failure points and reducing total cost of ownership. It delivers consistent 100GB performance with sub-microsecond latency—critical for latency-sensitive applications including financial trading, high-performance computing, and real-time analytics. **Ideal Applications** • Data center spine-leaf architectures • Server-to-switch connections • Storage area network (SAN) deployments • High-performance computing (HPC) clusters • Cloud infrastructure interconnects • Enterprise network upgrades **Technical Specifications** Length: 4 meters | Gauge: 26AWG | Connectors: QSFP28 to QSFP28 | Data Rate: 100GB | Operating Temperature: 0-70°C | Warranty: 90 days | Ships from Danville, CA and Beaufort, SC with free standard shipping on orders over $99. **Why Choose This Cable?** Unlike active optical cables that require power and complex troubleshooting, this passive DAC delivers superior reliability, easier deployment, and significantly lower costs. The 4-meter length balances flexibility with signal integrity, making it suitable for both compact and sprawling datacenter environments.