The JBX01064 400GBASE-FR4 QSFP-DD Transceiver represents cutting-edge optical transmission technology designed specifically for modern high-speed data center environments and enterprise network deployments. This sophisticated module delivers industry-leading 800Gbps data rates, enabling seamless integration into next-generation network architectures requiring ultra-high bandwidth capabilities. **Key Performance Features:** Operating over standard single-mode fiber (SMF) with a 9/125 micron core diameter, this transceiver achieves reliable 2km transmission distances, making it ideal for campus networks, data center interconnects, and metropolitan area deployments. The 400GBASE-FR4 standard ensures compatibility with emerging network equipment while maintaining backward compatibility with established infrastructure investments. **Technical Specifications:** The compact QSFP-DD form factor provides exceptional density, allowing deployment of multiple high-capacity transceiver units within minimal physical footprint. With dimensions of 5x4x2 inches and a metal case construction, it delivers durability and thermal efficiency. The precision laser transmitter technology ensures signal integrity and minimal attenuation across extended transmission distances. **Connectivity & Integration:** Duplex LC/UPC fiber connectors provide industry-standard connectivity, facilitating straightforward installation and minimizing downtime during network upgrades. Full compatibility with Arista QDD-800G-2FR4 systems makes this an excellent OEM alternative, enabling cost-effective network expansion and maintenance without sacrificing performance or reliability. **Compliance & Safety:** Rigorous compliance with RoHS/ELV directives and EU Directive 2002/95/EC ensures environmental responsibility. Class 1 laser certification (LN #50 7/2001), TUV, UL, and FDA 21CFR 1040.10 certifications guarantee safety across diverse deployment environments. Operating temperature range of 0-70°C accommodates both standard and challenging installation scenarios. **Value Proposition:** Backed by a comprehensive 90-day limited warranty and available with custom brand programming capabilities, the JBX01064 offers flexibility for integration into various network ecosystems. Free standard shipping on orders exceeding $99 provides additional cost savings for bulk deployments. **Applications:** Perfect for enterprise data centers, service providers, campus networks, and high-performance computing environments requiring premium optical transport solutions. The transceiver excels in applications demanding maximum throughput reliability with minimal latency.