The JBX05764 2m 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents an essential networking component for modern data centers and enterprise infrastructure. This high-capacity twinax copper cable is specifically engineered to meet the demanding requirements of HPE Networking environments while delivering exceptional performance and reliability. **Product Overview** Designed to support 100GB Ethernet transmission, this QSFP28 DAC cable provides a cost-effective solution for high-speed data center connectivity. The 2-meter length is optimized for standard rack configurations, enabling seamless switch-to-switch or switch-to-server connections without requiring expensive active electronics. **Technical Specifications** The cable features premium 28AWG twinax copper construction with durable plastic jacketing, ensuring signal integrity and longevity. Operating across temperatures from 0 to 70°C (32 to 158°F), it's suitable for diverse deployment environments. Full compliance with IEEE 802.3bj specifications and QSFP28 MSA standards guarantees compatibility with HPE networking equipment. **Key Advantages** Passive DAC technology eliminates the need for active transceivers, reducing power consumption and heat dissipation while lowering total cost of ownership. The cable's robust construction provides excellent EMI shielding, ensuring reliable high-speed data transmission without signal degradation. **Compliance & Certification** Fully RoHS and ELV compliant, this cable meets stringent environmental and safety standards including TUV and UL certifications. It replaces HPE OEM part numbers R0Z25A-2M and R9F77A-2M, offering identical performance with superior value. **Applications** Ideal for data center deployments, enterprise switches, server interconnects, and storage systems requiring 100GB connectivity. Perfect for organizations upgrading infrastructure or expanding network capacity. **Support & Warranty** Backed by a 90-day limited warranty and custom brand programming available. Ships from multiple locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99.