The JBX03422 20-meter 400GBASE-SR4 QSFP-DD Active Optical Cable represents the pinnacle of high-speed fiber optic connectivity for modern networking infrastructure. Engineered as a fully compatible replacement for Arista's A-D400-Q400-20M, this AOC cable delivers enterprise-grade performance with industry-leading reliability. **Technical Specifications & Performance:** This cable supports 400GB data transmission rates using the 400GBASE-SR4 standard, qualified to IEEE 802.3db specifications and QSFP-DD MSA CMIS standards. The 20-meter length provides optimal coverage for medium-distance data center interconnects, switch-to-switch connections, and equipment rack-to-rack deployments. With OM3 50/125 multimode fiber and 16 optical strands, the cable delivers superior bandwidth and signal integrity. **Construction & Durability:** Built with durable plastic jacketing and featuring LSZH (Low Smoke Zero Halogen) OFNR (Optical Fiber Non-conductive Riser) rated materials, this cable meets stringent fire safety requirements for data center installations. The robust construction ensures longevity even in demanding environments with operating temperatures spanning 0-70°C. **Safety & Compliance:** Comprehensive safety certifications include Class 1 Laser, UL/FDA 21CFR 1040.10, and TUV approval. The cable fully complies with RoHS and EU directive 2002/95/EC, ensuring environmental responsibility and workplace safety. **Ideal Applications:** • Enterprise data center networking • Cloud infrastructure deployments • High-speed switch interconnections • Server-to-switch connections • Campus network backbone links **Why Choose JBX03422:** Direct Arista compatibility eliminates integration concerns, while the 90-day limited warranty provides peace of mind. Available from conveniently located US warehouses (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming is available for enterprise deployments. This cable represents the optimal choice for organizations requiring certified, high-performance 400GB connectivity with the reliability and compatibility assurance that mission-critical network infrastructure demands.