The JBX05630 100G QSFP28 to 4x SFP28 passive breakout DAC cable represents the ideal solution for enterprises deploying high-speed network infrastructure. This 1-meter cable bridges the gap between legacy SFP28 systems and modern 100G QSFP28 architectures, providing flexible port expansion without performance compromise. **Technical Excellence:** Built to IEEE 802.3bj and QSFP28 MSA specifications, this cable delivers authentic 100GBASE-CR4 performance. The 30AWG twinax copper construction minimizes electromagnetic interference while maximizing signal fidelity. Unlike active DAC alternatives, this passive design eliminates power consumption, heat generation, and potential points of failure, extending infrastructure lifespan while reducing operational costs. **Certification & Compliance:** Fully RoHS and ELV compliant with TUV and UL safety certifications, meeting EU directive 2002/95/EC standards. This ensures regulatory compliance across global deployments and enterprise procurement requirements. **Compatibility & Integration:** Direct replacement for Extreme Networks part number 100G-DACP-QSFP4SFP1M, with seamless integration into existing network environments. The QSFP28 connector interfaces with modern switches while the four SFP28 breakout ports accommodate legacy equipment, maximizing infrastructure investment. **Operational Advantages:** Operates reliably across 0-70°C temperature ranges, suitable for demanding data center environments. The compact 1-meter length optimizes cable management in high-density switch deployments, reducing clutter and improving airflow. Free standard shipping on orders exceeding $99, with convenient fulfillment from US-based warehouses in California and South Carolina. **Ideal Applications:** Perfect for data center switch port expansion, virtualization infrastructure upgrades, and high-performance computing clusters. Network architects benefit from cost-effective port multiplication without sacrificing speed or reliability. The 90-day limited warranty provides confidence in enterprise deployments. **Why Choose This Cable:** Breakout DACs offer superior economics compared to active modules, requiring no power infrastructure modifications. The passive design ensures sub-microsecond latency critical for time-sensitive applications. With RoHS certification and global manufacturing standards, this cable meets stringent enterprise procurement criteria while delivering exceptional value for bandwidth-intensive environments.