The JBX05733 2.5m QSFP28 Passive DAC Cable represents an optimal solution for modern 100GB data center infrastructure. Designed as a direct replacement for HPE part numbers 845404-B21-2-5M, 834973-B24-250C, and R1N35A-2.5M, this cable seamlessly integrates into existing HPE environments while offering exceptional value. **Key Technical Features:** This passive direct-attach copper cable utilizes premium 28AWG twinax copper conductors, ensuring minimal signal loss and maximum data integrity over short distances. The QSFP28 form factor connectors provide secure, tool-free connections with audible click confirmation. Construction meets QSFP28 MSA and SFF-8665 standards, guaranteeing compatibility with certified equipment. **Performance & Compliance:** Qualified to IEEE 802.3bj specifications, the JBX05733 delivers sustained 100GB/s performance with minimal latency. RoHS (EU Directive 2002/95/EC), TUV, and UL certifications ensure compliance with international safety and environmental standards. The cable operates reliably across industrial temperature ranges (0-70°C / 32-158°F), making it suitable for both standard and challenging environments. **Advantages of Passive DAC Technology:** Unlike active cables, passive DAC solutions consume zero power and generate no heat, reducing data center cooling costs and power requirements. This makes them ideal for budget-conscious enterprises managing large-scale deployments. The 2.5-meter length balances connectivity flexibility with cost-effectiveness, perfect for equipment rack interconnections. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99, with convenient shipment from Danville, CA or Beaufort, SC locations. This product includes a 90-day limited warranty and supports custom brand programming for OEM applications. **Applications:** Perfect for high-performance computing clusters, enterprise data centers, storage networking, and 100GB Ethernet backbone connectivity. Compatible with HPE ProLiant servers, storage arrays, and network switches requiring 100GBASE-CR4 connectivity.