The JBX05261 10m Arista Compatible 40GBASE-CR4 QSFP+ Active Direct Attach Copper Cable represents a premium solution for modern data center networking requirements. This professionally engineered twinax cable is specifically designed to meet the demanding specifications of high-speed network environments while maintaining exceptional reliability and performance. **Technical Specifications & Performance** This active DAC cable features a robust 28AWG twinax copper construction with dual QSFP+ connectors, enabling seamless 40GB data transmission over 10 meters. Engineered to IEEE 802.3ba standards, the cable delivers consistent, high-fidelity signal transmission with minimal latency degradation. The active amplification technology incorporated within the cable ensures signal integrity across the full 10-meter span, making it ideal for longer interconnect distances where passive solutions may introduce performance compromises. **Compatibility & Integration** Fully compatible with Arista networking equipment, the JBX05261 serves as an exact replacement for OEM part number CAB-Q-Q-10MA. This compatibility eliminates integration concerns and ensures plug-and-play installation within existing Arista infrastructure. The cable's design supports seamless integration into 40GB QSFP+ AOC (Active Optical Cable) environments, facilitating efficient network expansion without requiring firmware updates or additional configuration. **Durability & Certification** Crafted with copper connectors and protective plastic jacketing, this cable withstands the rigors of data center environments while maintaining optimal performance. Operating across 0-70°C (32-158°F), the cable functions reliably in both standard and elevated temperature conditions. Comprehensive safety certifications including RoHS, TUV, and UL compliance demonstrate adherence to international standards, while EU directive 2002/95/EC (RoHS) compliance ensures environmentally responsible manufacturing. **Installation & Support** The cable ships from strategically located facilities in Danville, CA and Beaufort, SC, with free standard shipping on orders exceeding $99. Custom brand programming is available for enterprise customers requiring specialized identification. All units include a 90-day limited warranty, providing peace of mind for critical network deployments. **Applications & Use Cases** Ideal for data center switch-to-server connections, storage area network implementations, and high-performance computing clusters. Network administrators benefit from the cable's active amplification, which extends usable interconnect distances while eliminating the need for additional transceivers or signal conditioning equipment. The proven reliability of twinax construction combined with active amplification makes this cable suitable for mission-critical network infrastructure requiring maximum uptime and performance consistency.