The JBX05037 2-meter 400GBASE-CR8 QSFP-DD to 4x QSFP56 Direct Attach Copper (DAC) breakout cable represents a cost-effective, high-performance solution for modern data center networking architecture. Engineered for seamless integration with NVIDIA Mellanox platforms, this passive breakout cable enables efficient bandwidth management in large-scale enterprise and cloud infrastructure deployments. **Key Technical Specifications:** This 2m passive DAC cable utilizes premium 28AWG copper twinax construction with durable plastic jacketing, optimized for signal integrity over short-reach distances. The QSFP-DD form factor on the primary connection interfaces with four individual QSFP56 ports, supporting full 400GBASE-CR8 throughput while enabling flexible port aggregation strategies. The cable is qualified to ETC 400GBASE-CR8 and QSFP-DD MSA/CMIS standards, ensuring comprehensive compatibility. **Compliance and Certifications:** Full RoHS/ELV compliance with TUV and UL safety certifications ensures this cable meets stringent international regulatory standards. Manufactured in Vietnam and China with rigorous quality control, each unit is backed by a 90-day limited warranty. **Ideal Applications:** Perfect for data centers, high-performance computing clusters, cloud service providers, and enterprise network environments requiring 400GB connectivity. The breakout configuration supports flexible port aggregation, allowing single 400GB connections to be split across multiple 100GB ports for enhanced network topology flexibility. **Value Proposition:** As a direct compatible replacement for OEM part MCP7F60-W002R26, this cable delivers significant cost savings—typically 50-70% less than original equipment manufacturer pricing—without compromising performance or reliability. Passive DAC technology eliminates power consumption and heat generation, reducing overall data center operational costs. **Shipping and Support:** Qualifies for free standard shipping on orders exceeding $99, with availability from Danville, CA and Beaufort, SC locations for rapid delivery. Custom brand programming available for volume deployments and OEM partnerships. Whether upgrading existing infrastructure or deploying new 400G architecture, the JBX05037 delivers enterprise-grade performance and reliability at competitive pricing.