The JBX05318 5-meter 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents a cost-effective, high-performance solution for enterprise and data center networking environments. Engineered specifically for NVIDIA Mellanox ecosystem compatibility, this twinax DAC cable delivers exceptional speed and reliability while maintaining industry-standard specifications. **Technical Excellence:** This passive direct attach cable utilizes 28AWG twinax copper construction, providing optimal signal integrity and minimizing attenuation across the full 5-meter span. The QSFP+ form factor ensures universal compatibility with modern high-speed network interfaces, while the 40GBASE-CR4 specification guarantees IEEE 802.3ba compliance and reliable 40Gbps data transmission. **Key Advantages:** Passive DAC technology eliminates the need for external power, reducing deployment complexity and operational costs compared to active solutions. The copper construction provides superior thermal characteristics and cost efficiency without compromising performance. RoHS compliance and multiple safety certifications (RoHS, TUV, UL) ensure environmental responsibility and workplace safety. **Compatibility & Versatility:** Precisely engineered for NVIDIA Mellanox platforms, this cable seamlessly replaces OEM part numbers MCP1700-B005E, MC2206128-005, and MC2210128-005. The 5-meter length provides flexibility for various rack configurations and deployment scenarios common in enterprise data centers. **Performance Specifications:** • Operating Temperature Range: 0-70°C (32-158°F) • Data Rate: 40Gbps • Cable Gauge: 28AWG • Standards: IEEE 802.3ba, SFF-8436 • Regulatory: RoHS/ELV, EU directive 2002/95/EC **Warranty & Support:** Backed by a comprehensive 90-day limited warranty, ensuring peace of mind in mission-critical deployments. Custom brand programming is available for organizations requiring tailored solutions. Free standard shipping applies to orders exceeding $99, with convenient distribution from Danville, CA and Beaufort, SC facilities. Ideal for data center infrastructure upgrades, high-speed cluster interconnects, and enterprise networking applications where reliable, cost-effective 40GB connectivity is essential.