The JBX05051 1-meter 400GBASE-CR8 QSFP-DD Direct Attach Copper Cable represents the pinnacle of high-speed data center connectivity solutions. This passive breakout DAC cable seamlessly connects QSFP-DD interfaces to four QSFP56 ports, delivering exceptional 400GB bandwidth without active components, power consumption, or added latency. KEY FEATURES & SPECIFICATIONS: This cable features premium 30AWG twinax copper construction with professional-grade plastic jacketing, delivering superior signal integrity over 1-meter distances. The QSFP-DD to 4x QSFP56 configuration provides maximum flexibility for network scalability. Fully Arista compatible, the JBX05051 directly replaces OEM part number CAB-D-4Q-400G-1M, ensuring seamless integration with existing infrastructure. COMPLIANCE & CERTIFICATIONS: The cable is RoHS, TUV, and UL certified, meeting EU Directive 2002/95/EC requirements. It qualifies to rigorous ETC 400GBASE-CR8 and CMIS specifications, guaranteeing reliability in demanding enterprise environments. Operating temperature range of 0-70°C (32-158°F) supports diverse deployment scenarios. USE CASES & APPLICATIONS: Ideal for data centers, cloud service providers, high-performance computing clusters, and enterprise networks requiring ultra-reliable connectivity. The passive design eliminates concerns about power delivery and cooling, making it perfect for density-constrained environments. Superior to active solutions for applications under 1-meter distances where cost efficiency matters. SHIPPING & SUPPORT: Ships from strategic US locations (Danville, CA and Beaufort, SC) ensuring rapid delivery. Backed by a 90-day limited warranty and free standard shipping on orders exceeding $99. Custom brand programming available for enterprise customers. CABLE CARE: Store in temperature-controlled environments between 0-70°C. Avoid excessive bending to maintain optimal performance. Protect connectors from dust and contamination. Inspect regularly for physical damage.