The JBX05881 1-meter HPE-compatible 100GBASE-CR4 QSFP28 passive direct attach copper cable represents the ideal solution for enterprise-grade network connectivity demands. Engineered to IEEE 802.3bj specifications and QSFP28 MSA standards, this high-performance Ethernet cable delivers exceptional reliability for mission-critical applications. **Technical Excellence:** Built with premium 30AWG twinax copper construction, this passive DAC cable eliminates the complexity and cost of active components while maintaining superior signal integrity over short distances. The QSFP28 connectors feature precision-engineered copper contacts with protective plastic jacketing, ensuring durability and consistent performance across thousands of connection cycles. **Performance & Reliability:** Operating within a 0-70°C temperature range, this cable maintains stable performance in diverse data center environments. The passive design eliminates power consumption concerns and heat generation, reducing operational costs while extending equipment lifespan. With a 90-day limited warranty, this product demonstrates manufacturer confidence in quality and longevity. **Compliance & Certification:** Comprehensively certified to RoHS, TUV, and UL standards, this cable meets EU Directive 2002/95/EC requirements, ensuring environmental compliance and safety. Its qualification to QSFP28 MSA specifications guarantees compatibility with HPE networking equipment and broader industry-standard solutions. **Practical Applications:** Perfect for HPE ProLiant servers, switches, and network infrastructure, this 1-meter cable optimizes connectivity in rack-mounted environments, blade systems, and cluster configurations. IT professionals choose this DAC cable for its reliability, cost-effectiveness, and performance in 100GB network deployments. **Cost-Effective Solution:** Offering direct replacement compatibility with OEM part numbers 845404-B21, 834973-B22, and R1N35A, this alternative delivers significant cost savings without sacrificing quality. Ships free on orders exceeding $99 from distribution centers in Danville, CA and Beaufort, SC, ensuring rapid delivery and local support. Made in Vietnam and China with rigorous quality control, the JBX05881 represents trusted performance for demanding network environments.