The JBX06040 4-meter 10GBASE-CR SFP+ passive direct attach copper cable represents a professional-grade networking solution for enterprises and data centers requiring reliable 10GB Ethernet connectivity. This SFP+ twinax cable is specifically engineered for Arista network switch compatibility while maintaining industry-standard performance specifications. **Technical Specifications & Performance:** Features a robust 24AWG copper conductor wrapped in protective plastic jacketing that provides durability in rack-mounted and high-density networking environments. The cable supports 10GBASE-CR transmission standards and maintains full compliance with IEEE 802.3ae specifications, ensuring compatibility across generations of networking equipment. Operating across a wide 0-70°C temperature range, the JBX06040 performs consistently in both standard and demanding environmental conditions. **Certification & Compliance:** This cable meets stringent RoHS (Directive 2002/95/EC) and ELV directives, demonstrating commitment to environmental responsibility. TUV and UL safety certifications provide additional assurance of product quality and reliability. The cable is harmonized under code 8544.42.9090 and conforms to SFF-8431 and SFF-8472 standards for optical and electrical interoperability. **Compatibility & Integration:** Designed as a direct replacement for Arista's CAB-SFP-SFP-4M original equipment part number, this passive DAC cable integrates seamlessly into existing Arista infrastructure. SFP+ to SFP+ connectivity supports high-speed data transmission between switches, servers, and storage devices without requiring active powered modules. **Cost-Effective Solution:** Passive DAC technology eliminates expensive active electronics, reducing total cost of ownership while minimizing power consumption and heat generation. This makes the JBX06040 ideal for environmentally conscious organizations seeking to optimize data center efficiency. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99. Custom brand programming options are available for enterprise customers. All purchases include a 90-day limited warranty, with convenient shipping from Danville, CA and Beaufort, SC locations.