The JBX05094 3-meter 400GBASE-CR8 QSFP-DD Direct Attach Copper cable represents an enterprise-grade connectivity solution for next-generation data center networks requiring ultra-high-speed performance. This passive DAC technology eliminates the need for power-consuming active components, reducing operational costs while maintaining exceptional signal integrity across 400GB connections. **Technical Specifications:** Designed with dual QSFP-DD connectors and 26AWG twinax copper construction, this cable delivers deterministic performance adhering to ETC 400GBASE-CR8 standards. The 3-meter length accommodates flexible network topology designs without signal degradation. Operating temperature range of 0°C to 70°C ensures reliable functionality across varied environmental conditions. **Key Features & Benefits:** - **Passive Technology:** Reduces power consumption and heat generation compared to active alternatives - **High-Speed Performance:** Full 400GB data rate capability with minimal latency - **RoHS Compliant:** Environmentally responsible manufacturing meeting EU directives - **Universal Compatibility:** Direct Arista compatibility with broad ecosystem support - **Durable Construction:** Copper conductors with protective jacketing ensure longevity - **Cost-Effective:** Premium performance at competitive pricing **Use Cases:** Ideal for enterprise data centers, cloud infrastructure, high-frequency trading environments, and telecommunications facilities where reliable 400GB connectivity is essential. Perfect for direct switch-to-switch connections or module-to-module applications. **Compliance & Certifications:** Fully RoHS and ELV compliant with TUV and UL safety certifications. Replaces Arista OEM part CAB-D-D-400G-3M with equivalent performance. **Warranty & Support:** Backed by a 90-day limited warranty. Ships from US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming available for volume orders.