The JBX03164 400G QSFP-DD Active Optical Cable (AOC) is a professional-grade interconnect solution engineered for demanding data center and high-performance computing environments. As a direct replacement for Juniper's QDD-2X200G-AOC-15M, this 15-meter breakout cable delivers exceptional performance and reliability for modern networking infrastructure. **Technical Specifications & Architecture** This cable features a sophisticated 16-strand fiber design utilizing OM3 50/125 multimode fiber cores, providing optimal signal integrity across 400G-2x200G configurations. The QSFP-DD form factor on one end transitions to dual QSFP56 connectors on the other, enabling flexible multi-lane connectivity. The cable achieves 400GB aggregate throughput while maintaining individual 200GB per port specifications, making it ideal for high-density port configurations. **Superior Materials & Safety Features** Construction incorporates fire-rated OFNR LSZH (Low Smoke Zero Halogen) jacketing with plastic shielding, meeting stringent building codes and safety standards. The cable is fully RoHS/ELV compliant and carries comprehensive certifications including UL/FDA 21CFR 1040.10, TUV approval, and Class 1 Laser safety designation. These certifications ensure safe operation in virtually any data center or enterprise networking environment. **Industry Standards Compliance** The JBX03164 is qualified to IEEE 802.3bs specifications and adheres to QSFP-DD MSA and CMIS standards. This standardization guarantees compatibility with Juniper switches and other compliant network equipment, reducing deployment risks and ensuring future interoperability. **Operational Excellence** The cable's operating temperature range of 0-70°C (32-158°F) accommodates both standard and temperature-controlled data center environments. Dimensions of 12x12x15 inches provide flexible routing options in dense equipment racks. Fast deployment is enabled by quick-connect connectors, while the 15-meter length offers optimal distance coverage for typical rack-to-rack and switch-to-switch installations. **Value & Support** With free standard shipping on orders exceeding $99 and rapid fulfillment from Danville, CA or Beaufort, SC locations, this cable offers exceptional logistics advantages. The 90-day limited warranty provides purchase confidence, and custom brand programming is available for organizations requiring OEM-specific labeling or configurations. **Ideal Applications** Perfect for enterprise data centers, financial trading floors, scientific research facilities, cloud infrastructure, and any environment demanding high-speed optical connectivity. The 400G-2x200G architecture is particularly suited for organizations transitioning to 400G infrastructure while maintaining investment in existing 200G equipment. The JBX03164 represents the ideal balance of performance, compliance, and value for enterprises seeking reliable, standards-compliant 400G connectivity.