The JBX05818 0.5m 100GBASE-CR4 QSFP28 Passive DAC Cable represents the ideal solution for enterprises deploying high-speed data center infrastructure. This purpose-built cable delivers exceptional performance while maintaining cost efficiency through passive direct attach copper technology. **Technical Excellence:** This cable meets IEEE 802.3bj specifications and QSFP28 MSA standards, ensuring compatibility across major networking platforms. The 30AWG twinax copper construction provides optimal signal integrity for 100GB Ethernet transmission over short distances. With dimensions of 12x12x2mm and a lightweight design, this cable integrates seamlessly into dense rack environments without compromising airflow or accessibility. **Extreme Networks Compatibility:** Engineered as a direct replacement for multiple OEM part numbers (100G-DACP-QSFPZ5M, 10410, AA1405029-E6-50CM), this cable ensures seamless integration into existing Extreme Networks deployments. The QSFP28 to QSFP28 connector configuration provides hot-pluggable connectivity for rapid network reconfiguration. **Certified Quality & Compliance:** With RoHS, TUV, and UL certifications, this cable meets stringent international safety and environmental standards. The RoHS compliance (EU directive 2002/95/EC) ensures hazardous substance restrictions are met for global deployment. **Practical Advantages:** Passive DAC technology eliminates the power consumption and heat generation associated with active cables, reducing data center cooling requirements. The 0.5-meter length is ideal for connecting adjacent equipment in modern server racks and switch fabrics. Operating temperature range of 0-70°C accommodates diverse data center environments. **Warranty & Support:** Backed by a 90-day limited warranty, this cable includes custom brand programming availability for OEM applications. Free standard shipping on orders over $99 and domestic sourcing from Danville, CA and Beaufort, SC ensure rapid delivery. **Use Cases:** Ideal for connecting Extreme Networks switches to storage arrays, servers, and network appliances in enterprise data centers, high-frequency trading environments, cloud infrastructure, and content delivery networks requiring ultra-reliable, low-latency connectivity.