The JBX05048 1.5m 400GBASE-CR8 QSFP-DD to 4x QSFP56 direct attach copper breakout cable represents a cutting-edge solution for modern data center networking requirements. This passive breakout DAC cable is specifically engineered to deliver exceptional performance in demanding enterprise environments while maintaining cost-effectiveness compared to active optical alternatives. **Technical Specifications:** This cable features a QSFP-DD male connector on one end that breaks out into four QSFP56 male connectors, enabling seamless integration with existing infrastructure. The 30AWG twinax copper conductors minimize signal loss while the 1.5-meter length provides optimal flexibility for equipment placement within standard rack configurations. The cable is manufactured in Vietnam and China, ensuring rigorous quality control standards throughout production. **Compliance and Certification:** Fully compliant with RoHS and ELV directives, this cable meets EU Directive 2002/95/EC regulations, making it suitable for global deployment. Safety certifications include RoHS, TUV, and UL approvals, guaranteeing reliable performance and worker safety in all installation environments. **Performance and Compatibility:** Designed as a direct replacement for Cisco's QDD-4ZQ100-CU1-5M, this DAC cable is qualified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards. It supports 400GB data rates with CMIS compliance, ensuring seamless interoperability with modern networking equipment from industry leaders. **Use Cases:** Ideal applications include: - Data center switch-to-server connections - Storage array interconnects - High-performance computing clusters - Enterprise network backbone links - Server virtualization environments **Operational Environment:** With an operating temperature range of 0-70°C (32-158°F), this cable maintains consistent performance across diverse data center environments. The robust plastic jacketing provides mechanical protection while maintaining flexibility for installation in congested cable management spaces. **Warranty and Support:** Included 90-day limited warranty provides peace of mind, with custom brand programming available for OEM and reseller partners. Free standard shipping on orders exceeding $99, with convenient fulfillment from Danville, CA or Beaufort, SC facilities ensures rapid delivery.