The JBX05478 3-meter HPE compatible 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a cost-effective, high-performance solution for modern data center infrastructure. As a passive DAC, it eliminates the active components required by some competitor products, resulting in lower power consumption, reduced heat generation, and simplified installation—critical advantages in space-constrained server environments. Technical Excellence This cable utilizes 30AWG twinax copper construction, engineered to support full 40GB/s data rates while minimizing signal degradation over the 3-meter span. The dual copper conductors provide superior shielding against electromagnetic interference, ensuring clean signal transmission in dense networking environments. Copper connectors on both QSFP+ interfaces guarantee reliable mating cycles and consistent electrical performance. Compliance & Reliability Manufactured to IEEE 802.3ba and SFF-8436 standards, this cable has been rigorously tested to ensure compatibility with HPE equipment. RoHS, TUV, and UL certifications confirm adherence to international safety and environmental regulations. The cable operates reliably across a 0-70°C temperature range, making it suitable for both standard data centers and high-density computing environments. HPE Integration Designed as a drop-in replacement for HPE OEM part numbers 498385-B23 and AT097A, this cable eliminates compatibility concerns and procurement delays. The QSFP+ form factor ensures seamless integration with current and next-generation HPE switches, servers, and storage systems. Applications Ideal for server-to-switch connectivity, direct-attached storage, and high-bandwidth cluster computing. The 3-meter length accommodates typical rack configurations while maintaining signal integrity. Whether upgrading legacy infrastructure or deploying new installations, this DAC cable delivers enterprise-grade performance. Warranty & Support Backed by a 90-day limited warranty with dedicated technical support. Custom brand programming is available for OEM customers. Ships from multiple U.S. locations with free standard shipping on orders exceeding $99.