The JBX01074 400GBASE-SR4.2 QSFP-DD Transceiver represents cutting-edge optical networking technology designed for modern data center architectures. This high-capacity module delivers 400 gigabit per second data transmission over 150 meters of OM5 multimode fiber, enabling efficient, cost-effective connectivity for enterprise-scale deployments. Key Technical Specifications: This transceiver operates at dual wavelengths (855nm and 908nm) and features MTP/MPO-12 UPC fiber connectors, the industry standard for high-density optical interfaces. The SR4.2 form factor is optimized for QSFP-DD (Quad Small Form-factor Pluggable Double Density) modules, supporting four independent 100GB channels aggregated to 400GB total throughput. Its compact dimensions (5x4x2 inches) enable maximum port density in switch infrastructure while maintaining thermal efficiency. Compatibility and Integration: Fully compatible with Juniper QDD-400G-SR4P2 specifications, this module integrates seamlessly into Juniper switch environments without compatibility concerns. The transceiver meets IEEE 802.3bs standards and QSFP-DD MSA specifications, ensuring interoperability with certified network equipment. Custom brand programming is available for integration into white-label or co-branded solutions. Quality and Compliance: Manufactured with precision-engineered metal housings and integrated laser transmitter technology, this module delivers years of reliable operation. It maintains full compliance with RoHS/ELV directives (EU 2002/95/EC) and carries comprehensive safety certifications including Class 1 Laser, TUV, UL, and FDA 21CFR 1040.10 compliance. Operating across temperatures from 0-70°C (32-158°F), it performs reliably in various data center conditions. Applications: Ideal for campus networking, data center interconnects, storage area networks (SANs), and high-performance computing environments requiring 400GB connectivity. Perfect for enterprises upgrading network infrastructure to accommodate bandwidth-intensive applications, cloud services, and big data analytics. Warranty and Support: Every unit includes a 90-day limited warranty and ships from strategically located U.S. facilities (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Technical specifications and certifications ensure long-term performance and regulatory compliance across global deployments.