The JBX01103 400GBASE-LR4 QSFP-DD Transceiver represents cutting-edge optical networking technology designed to meet the demanding requirements of modern data centers and service provider networks. This module enables ultra-high-speed data transmission at 400 gigabits per second over extended distances while maintaining exceptional signal integrity and reliability. **Technical Excellence and Performance** Operating at 400GB data rates, this QSFP-DD transceiver utilizes advanced laser transmission technology within a compact metal case. The 10-kilometer transmission range over single-mode fiber (9/125 micron core) makes it perfect for campus networks, data center interconnects, and metropolitan area connections. The duplex LC/UPC fiber connectors ensure low insertion loss and superior optical performance compared to standard alternatives. **Standards Compliance and Compatibility** This transceiver is fully qualified to IEEE 802.3bs specifications and adheres to QSFP-DD Multi-Source Agreement (MSA) standards. Its direct compatibility with Cisco QDD-400G-LR4-S systems eliminates integration concerns and reduces deployment time. Whether replacing OEM equipment or expanding existing infrastructure, this module provides seamless interoperability with enterprise-grade network equipment. **Safety and Regulatory Certifications** Designed with safety as a priority, the JBX01103 carries Class 1 Laser certification and meets FDA requirements (21CFR 1040.10). It complies with EU Directive 2002/95/EC (RoHS) and ELV standards, ensuring environmentally responsible manufacturing. TUV and UL certifications validate rigorous quality and safety standards. **Operational Reliability** With an operating temperature range of 0-70°C (32-158°F), this transceiver performs reliably in diverse environmental conditions. Custom brand programming is available for enterprises requiring white-label solutions or specific naming conventions. The 90-day limited warranty provides peace of mind on your investment. **Logistics and Support** Shipping from dual U.S. locations (Danville, CA and Beaufort, SC) ensures rapid delivery with free standard shipping on orders exceeding $99. This strategic logistics approach minimizes lead times for urgent network upgrades and replacements. Whether you're building next-generation data center architecture or upgrading existing metro networks, the JBX01103 delivers the performance, reliability, and value required for mission-critical applications.