The JBX05294 5-meter Arista-compatible 40GBASE-CR4 QSFP+ passive direct attach copper cable represents an optimal solution for enterprise-grade network infrastructure requiring high-speed, low-latency data transmission. This passive DAC cable eliminates the need for active signal processing, reducing operational complexity and total cost of ownership while delivering reliable 40GB Ethernet performance. **Technical Specifications:** This cable features QSFP+ connectors on both ends, specifically engineered for direct connection to compatible switch ports and networking equipment. The 28AWG twinax copper conductor design minimizes signal loss and impedance variations across the full 5-meter length, ensuring compliance with IEEE 802.3ba specifications. Operating temperature range of 0-70°C (32-158°F) accommodates typical data center environmental conditions. **Compatibility & Applications:** Developed specifically for Arista network switches, this cable directly replaces OEM part number CAB-Q-Q-5M and integrates seamlessly with existing Arista deployments. Ideal applications include data center switch-to-switch connections, server-to-switch uplinks, and storage area network (SAN) infrastructure requiring 40GB bandwidth. **Quality & Compliance:** Manufactured to RoHS, TUV, and UL standards, this cable meets EU directive 2002/95/EC requirements. The plastic jacketing protects copper conductors from environmental damage while maintaining flexibility for installation in congested equipment racks. **Cost Efficiency:** Passive DAC technology provides superior cost-per-megabit performance compared to active optical cables or transceivers, making this solution ideal for budget-conscious enterprises scaling their network infrastructure. Free standard shipping on qualifying orders enhances overall value. **Installation & Support:** The cable ships from multiple U.S. locations (Danville, CA and Beaufort, SC) for expedited delivery. Custom brand programming is available for large-volume deployments or OEM partnerships, and the 90-day limited warranty provides confidence in product quality and performance reliability.