The JBX03191 3-meter 400GBASE-SR4.2 QSFP-DD active optical cable represents the pinnacle of high-speed network connectivity solutions for modern data centers. As a direct Cisco QDD-4X100G-AOC3M compatible replacement, this breakout cable seamlessly integrates into existing infrastructure while delivering exceptional performance and reliability. Key Features: This QSFP-DD to 4x QSFP28 breakout architecture provides unprecedented flexibility for network upgrades. The cable utilizes 16 fiber strands of OM3 50/125 multimode fiber, supporting 400GB data rates across four independent 100GB channels. The OFNR LSZH (Low Smoke Zero Halogen) jacketing ensures compliance with building codes and fire safety regulations, making it suitable for installation in plenums and other restricted environments. Technical Specifications: Operating temperature range of 0-70°C accommodates diverse data center climates. The cable meets IEEE 802.3bs and QSFP-DD MSA specifications, ensuring compatibility with current and next-generation equipment. Safety certifications include UL/FDA 21CFR 1040.10, TUV, and Class 1 Laser compliance, demonstrating commitment to user safety. Applications: Ideal for high-density server connections, storage area networks (SANs), and campus backbone applications. The breakout design allows operators to disaggregate 400G ports into four 100G connections, reducing costs and improving port utilization efficiency. Value Proposition: With free standard shipping on orders over $99, custom branding options, and a 90-day limited warranty, this cable delivers enterprise-grade reliability at competitive pricing. Ships from US locations (Danville, CA and Beaufort, SC) for rapid delivery. Maintenance & Care: Store in temperatures between 0-70°C when not in use. Protect connectors from dust and contamination using provided caps. Clean ferrules with optical-grade cleaning materials if needed before installation.