The JBX05273 4m 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents a cost-effective, high-performance solution for modern data center and enterprise network environments. This twinax cable delivers reliable 40Gbps connectivity with the simplicity of passive technology—no additional power consumption or active components required. Technical Specifications: The cable features premium 28AWG twinax copper construction with protective plastic jacketing, ensuring durability and consistent signal transmission. With a 4-meter length, it's perfectly suited for typical rack-to-rack connections and short-distance, high-speed data transfers. The QSFP+ connectors provide robust mechanical engagement with gold-plated contacts for optimal conductivity. Compliance & Certification: This cable is fully compliant with IEEE 802.3ba and SFF-8436 standards, meeting all performance requirements for 40GBASE-CR4 applications. It holds RoHS, TUV, and UL certifications, demonstrating its adherence to international safety and environmental standards per EU Directive 2002/95/EC. Arista Compatibility: Specifically engineered for Arista network switches and infrastructure, this cable is a direct replacement for OEM part CAB-Q-Q-4M. It integrates seamlessly with Arista's ecosystem, ensuring optimal performance and reliability. Applications & Use Cases: Ideal for data center environments, this DAC cable excels in switch-to-switch connections, server-to-switch interconnects, and storage network deployments. The passive design makes it a preferred choice for cost-conscious enterprises seeking to minimize power consumption while maintaining ultra-low latency. Operating Conditions: The cable operates reliably in temperature ranges from 0-70°C (32-158°F), making it suitable for standard data center conditions. Custom brand programming is available for OEM applications. Warranty & Support: Every JBX05273 cable includes a 90-day limited warranty. Ships from U.S. facilities in California and South Carolina with free standard shipping on orders exceeding $99, ensuring quick delivery and reduced total cost of ownership.