The JBX05423 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents a cost-effective, high-performance solution for modern data center networking. Engineered to meet the demanding requirements of NVIDIA Mellanox-compatible environments, this 2.5-meter cable delivers reliable 40Gbps connectivity ideal for server-to-switch interconnections and high-speed data transfers. **Technical Specifications & Performance** This passive DAC cable features premium 30AWG twinax copper construction with plastic jacketing, providing excellent electromagnetic shielding and signal integrity. With a data rate of 40GB, it fully complies with IEEE 802.3ba specifications and SFF-8436 standards, ensuring certified performance in enterprise environments. The cable operates reliably across a 0-70°C temperature range, supporting both hot and standard deployment environments. **Compatibility & Integration** The JBX05423 is specifically qualified for NVIDIA Mellanox platforms and directly replaces multiple OEM part numbers including MC2206130-02A, MCP1700-B02AE, and MC2210130-0A2. The QSFP+ to QSFP+ connector configuration ensures seamless integration with existing infrastructure without requiring adapter modules or additional hardware. **Key Advantages** As a passive DAC solution, this cable eliminates the need for active components, reducing operational costs, power consumption, and heat dissipation compared to active cables. The 2.5-meter length provides optimal flexibility for typical rack-to-rack and server-to-switch deployments while maintaining signal quality. RoHS and ELV compliance ensures environmental responsibility and regulatory adherence across global markets. **Quality Assurance** Manufactured to exacting standards with TUV and UL safety certifications, the cable undergoes rigorous quality testing. Each unit includes a 90-day limited warranty and custom brand programming options for enterprise deployments. Available with free standard shipping on orders over $99 from convenient US shipping locations in California and South Carolina. **Applications** Ideal for data center infrastructure upgrades, high-performance computing clusters, storage area networks, and any environment requiring reliable 40Gbps connectivity. Whether deploying new infrastructure or upgrading existing systems, this cable provides the performance, compatibility, and reliability that modern enterprises demand.