The JBX03210 25-meter 400GBASE-SR8 QSFP-DD active optical breakout cable represents the pinnacle of high-speed interconnect solutions for modern data centers and enterprise networks. This professional-grade component directly replaces Cisco's OEM part number QDD-4ZQ100G-AOC25M, providing identical functionality at competitive pricing. Technical Excellence: This breakout AOC cable utilizes 16 individual fiber strands of OM3 50/125 multimode fiber, enabling simultaneous transmission of four QSFP56 signals aggregating to 400Gbps throughput. The QSFP-DD form factor provides superior density for high-capacity switch port configurations while maintaining backward compatibility through the CMIS (Common Management Interface Specification) protocol. Safety and Compliance: The cable features LSZH (Low Smoke Zero Halogen) riser-rated (OFNR) jacketing, essential for plenum-adjacent installations and regulatory compliance. Comprehensive certifications include Class 1 laser safety, UL/FDA (21CFR 1040.10), and TUV validation. RoHS and EU directive 2002/95/EC compliance ensures environmental responsibility and global deployability. Performance Specifications: Qualified to IEEE 802.3cm standards and QSFP-DD MSA specifications, this cable operates reliably across 0-70°C (32-158°F) ambient conditions. The 25-meter length accommodates mid-to-long-range intra-data-center connectivity and building distribution scenarios. Applications and Benefits: Ideal for enterprise networks, cloud service providers, and high-frequency trading environments requiring ultra-low latency 400Gbps interconnects. The active optical architecture eliminates signal degradation over extended runs that passive copper cables experience. Custom brand programming capabilities available for OEM integration projects. Value Proposition: Qualified replacement parts offer 20-30% cost savings versus OEM equivalents while maintaining identical performance and reliability specifications. Ships from US locations (Danville, CA and Beaufort, SC) ensuring rapid deployment. 90-day limited warranty provides confidence for mission-critical installations. Free standard shipping on orders exceeding $99 threshold.