The JBX01106 400GBASE-LR4 QSFP-DD Transceiver represents state-of-the-art optical interconnect technology for enterprise and service provider networks. This Juniper QDD-400G-LR4-10 compatible module enables seamless integration into existing Juniper equipment while maintaining backward compatibility with standardized QSFP-DD platforms. Key Technical Specifications: Supporting 400GB throughput with extended 10km range capability, this transceiver utilizes advanced laser transmission technology optimized for singlemode fiber propagation. The 9/125 micron core delivers superior signal integrity over longer distances compared to multimode alternatives. Duplex LC/UPC connectors provide industry-standard connectivity with minimal insertion loss and excellent return loss characteristics. Performance & Reliability: Qualified to IEEE 802.3bs standards and QSFP-DD MSA specifications, ensuring interoperability across multiple vendor platforms. Operates reliably within 0-70°C temperature parameters, suitable for data center, campus network, and carrier-grade deployments. The metal case construction with integrated laser transmitter provides enhanced durability and heat dissipation. Compliance & Certifications: Fully RoHS/ELV compliant meeting EU Directive 2002/95/EC requirements. Class 1 laser certification with UL, FDA (21CFR 1040.10), and TUV approvals guarantee safety in professional environments. Harmonization code 8544.70.0000 ensures proper customs classification. Customization & Support: Custom brand programming available for OEM and system integrator requirements. Includes 90-day limited warranty covering manufacturing defects. Free standard shipping on orders exceeding $99 with distribution from convenient US locations (Danville, CA and Beaufort, SC). Ideal Applications: Data center interconnect, metro area networks, campus backbone upgrades, and long-distance optical links requiring high capacity and reliability. Perfect for organizations standardizing on Juniper infrastructure or requiring QSFP-DD form factor compatibility.