The JBX05748 2.5-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents the ideal balance of performance, reliability, and cost-effectiveness for modern data center networking. Engineered specifically for Ruckus-compatible infrastructure, this cable delivers 100GB connectivity without the expense and complexity of active optical solutions. **Technical Specifications & Performance** Featuring precision 28AWG twinax copper construction, this passive DAC cable achieves exceptional signal fidelity for high-speed data transmission. The QSFP28 connectors provide secure, keyed connections that prevent accidental mismatches. Operating across a temperature range of 0-70°C, it maintains consistent performance in varied environmental conditions. Qualified to IEEE 802.3bj and QSFP28 MSA specifications, this cable meets stringent industry standards. **Compliance & Safety** Fully RoHS and ELV compliant, the cable adheres to EU directive 2002/95/EC, making it suitable for organizations with strict environmental and regulatory requirements. Multiple safety certifications including TUV and UL validation ensure workplace safety and equipment protection. **Practical Advantages** Passive DAC technology eliminates power requirements, reducing energy consumption and operational complexity compared to active solutions. The 2.5-meter length provides flexibility for server-to-switch and switch-to-switch connections in compact rack configurations. Direct copper construction minimizes latency, critical for latency-sensitive applications including financial trading, real-time analytics, and high-frequency data processing. **Seamless Integration** Drop-in compatibility with Ruckus infrastructure ensures straightforward deployment without firmware updates or additional configuration. The cable replaces OEM part E100G-QSFP-QSFP-P-0251, simplifying procurement and inventory management. **Care & Maintenance** To ensure optimal performance, avoid excessive bending and store in clean, dry conditions. Inspect connectors regularly for dust and contamination. With proper handling, this cable provides years of reliable service. Backed by a 90-day limited warranty, you can deploy with confidence knowing support is available when needed.