The JBX05881 1-meter HPE Compatible 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents a cost-effective solution for organizations seeking reliable high-speed connectivity without active components or power consumption. As a passive DAC cable, it eliminates the complexity and expense associated with active transceivers while delivering impressive 100GB throughput performance. **Key Features:** - 100GBASE-CR4 compliant for 100GB Ethernet speeds - QSFP28 connectors on both ends for universal compatibility - 30AWG twinax copper construction for optimal signal quality - Compact 1-meter length perfect for switch-to-server and switch-to-switch connections - Passive design—no power requirements, no heat generation - Lightweight and flexible for easy installation in crowded rack environments **Technical Specifications:** - Data Rate: 100GB - Form Factor: QSFP28 MSA compliant - Cable Gauge: 30AWG - Length: 1 meter - Operating Temperature: 0°C to 70°C (32°F to 158°F) - Standards: IEEE 802.3bj, QSFP28 MSA, SFF-8665 **Compliance & Certification:** This cable meets stringent international standards with RoHS (EU directive 2002/95/EC), TUV, and UL certifications, ensuring safety and environmental compliance. All materials are responsibly sourced from Vietnam and China manufacturing facilities. **Compatibility:** Direct replacement for HPE part numbers 845404-B21, 834973-B22, and R1N35A. Compatible with HPE ProLiant servers, switches, and networking equipment supporting QSFP28 connections. **Applications:** Ideal for data centers, cloud infrastructure, high-frequency trading networks, and any environment requiring high-bandwidth, low-latency connectivity. Perfect for budget-conscious enterprises needing reliable 100GB interconnects. **Warranty & Support:** Backed by a 90-day limited warranty. Free standard shipping on orders over $99. Ships from Danville, CA and Beaufort, SC for rapid delivery. Custom brand programming available for OEM requirements.