The JBX05681 4-meter 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents enterprise-grade networking connectivity engineered specifically for HPE infrastructure. This high-performance interconnect solution is designed to meet the demanding requirements of modern data centers requiring high-speed, low-latency communication. Technical Specifications & Performance: This passive DAC cable supports 100GBASE-CR4 transmission standards, delivering consistent 100GB/s throughput essential for bandwidth-intensive applications. The 4-meter length provides optimal reach for typical data center rack configurations without compromising signal quality. Constructed with 26AWG twinax copper and high-quality plastic jacketing, the cable ensures reliable long-term performance in temperature ranges from 0 to 70°C (32 to 158°F). Compliance & Certification: Fully compliant with IEEE 802.3bj specifications and QSFP28 MSA standards, this cable meets stringent industry requirements. RoHS and ELV certifications ensure environmental responsibility, while TUV and UL safety certifications confirm reliability and safety standards. The cable adheres to EU directive 2002/95/EC requirements. Applications & Use Cases: Ideal for HPE ProLiant servers, switches, and storage systems requiring high-bandwidth interconnectivity. Commonly deployed in enterprise data centers, cloud infrastructure environments, and high-performance computing clusters. The passive design makes it suitable for cost-conscious deployments without sacrificing performance or reliability. Advantages Over Alternatives: Unlike active optics, passive DAC cables require no external power, reducing complexity and operational costs. They offer superior signal integrity for short-distance connections while maintaining the same 100GB/s performance. The direct copper-to-connector design eliminates potential failure points associated with transceivers. Warranty & Support: Backed by a comprehensive 90-day limited warranty. Ships from multiple U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming available for enterprise deployments requiring OEM-specific branding. Manufactured in Vietnam and China using rigorous quality control standards, this cable delivers the reliability demanded by enterprise networking professionals worldwide.