The JBX05007 400GBASE-CR8 QSFP-DD to 2x QSFP56 direct attach copper breakout cable represents a cost-effective, high-performance solution for data center networking professionals seeking reliable 400GB connectivity. This 1-meter passive breakout DAC is engineered to replace Cisco's OEM part number QDD-2Q200-CU1M while delivering equivalent performance at competitive pricing. **Technical Specifications & Performance** Constructed with premium 30AWG twinax copper conductors and durable plastic jacketing, this cable delivers exceptional signal integrity across demanding network environments. Operating reliably from 0 to 70°C (32 to 158°F), it's engineered for both hot and cool data center deployments. The cable is fully qualified to IEEE ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards, ensuring seamless integration with existing Cisco infrastructure. **Key Features & Benefits** As a passive breakout solution, the JBX05007 requires no external power, reducing cooling requirements and operational complexity. The single 1-meter QSFP-DD connector splits into two QSFP56 interfaces, enabling flexible network reconfiguration without additional hardware. Full RoHS and EU directive 2002/95/EC compliance ensures environmental responsibility and regulatory adherence across global deployments. **Ideal Applications** This cable excels in modern data centers implementing high-speed interconnects, cloud infrastructure, AI/ML computing clusters, and enterprise network upgrades. It's particularly valuable for organizations transitioning from lower-speed standards to 400GB while preserving existing QSFP56 equipment investments. **Quality & Reliability** Manufactured in Vietnam and China with rigorous quality control, the JBX05007 includes TUV and UL safety certifications, guaranteeing performance reliability. The included 90-day limited warranty provides peace of mind for mission-critical deployments. With free standard shipping on orders exceeding $99 and availability from US distribution centers in Danville, CA and Beaufort, SC, this solution delivers both value and convenience for networking professionals seeking enterprise-grade 400GB connectivity.