The JBX01100 400GBASE-FR4 QSFP-DD transceiver represents the cutting edge in optical networking technology, specifically engineered for high-capacity data center interconnections. This module delivers exceptional 400 Gigabit Ethernet performance over extended singlemode fiber distances, making it ideal for campus networks, inter-data center links, and enterprise backbone architectures. **Technical Specifications & Performance:** Operating at 400GB/s data rates, this transceiver supports transmission distances up to 2 kilometers over standard 9/125 micron singlemode fiber. The Duplex LC/UPC connector configuration ensures compatibility with most modern network infrastructure while minimizing signal loss and reflection. The module conforms to IEEE 802.3bs standards, QSFP-DD Multi-Source Agreement (MSA), and CMIS specifications, guaranteeing seamless interoperability. **Build Quality & Durability:** Constructed with a robust metal case and advanced laser transmitter technology, the JBX01100 withstands demanding operational environments. The transceiver maintains full functionality across 0-70°C operating temperatures and carries Class 1 Laser certification, TÜV approval, and FDA compliance (21CFR 1040.10). RoHS and ELV directive compliance ensures environmental responsibility without compromising performance. **Compatibility & Integration:** Perfectly matched to NVIDIA Mellanox infrastructure, this module directly replaces OEM part numbers 980-9I160-00W000 and MMS1V50-WM. Custom brand programming is available for organizations requiring personalized configurations or white-label deployments. **Value & Support:** Each unit includes a 90-day limited warranty and ships from convenient U.S. locations (Danville, CA or Beaufort, SC) with free standard shipping on orders exceeding $99. The transceiver's proven reliability, comprehensive certifications, and broad compatibility make it an excellent choice for IT managers and network engineers seeking cost-effective enterprise-grade optical solutions without compromising on performance or security standards.