The JBX01399 100GBASE-CWDM4 QSFP28 transceiver represents a premium solution for organizations seeking high-speed, reliable optical connectivity within their data center and enterprise network environments. This dual-fiber duplex module delivers consistent 100GB performance over 2-kilometer distances, making it ideal for medium-range interconnects between data centers, server clusters, and network aggregation points. **Technical Architecture:** Built on proven 100GBASE-CWDM4 technology, this transceiver utilizes coarse wavelength division multiplexing to optimize spectral efficiency. The integrated laser transmitter and precision optics are housed in a rugged metal case, ensuring durability in rack-mounted and high-density deployment scenarios. The 9/125 micron singlemode fiber core specification allows utilization of standard telecommunications-grade fiber infrastructure, reducing deployment costs while maintaining performance integrity. **Compatibility & Integration:** This module is fully qualified for NVIDIA Mellanox ecosystems, directly replacing OEM part numbers 980-9I17Q-00CM00, MMA1L30-CM, and 980-9I63F-00CM00. Network architects and IT professionals can confidently integrate this transceiver into existing Mellanox-based switching fabrics without firmware modifications or compatibility concerns. IEEE 802.3bm compliance and QSFP28 Multi-Source Agreement certification ensure broad ecosystem support. **Safety & Compliance:** Comprehensive safety certifications include Class 1 Laser designation, TUV, UL/FDA compliance with 21CFR 1040.10 adherence, and full RoHS/ELV directive compliance. These certifications demonstrate our commitment to operational safety and environmental responsibility, meeting stringent requirements for deployment in regulated industries and environmentally conscious organizations. **Performance Specifications:** Operating temperature range of 0-70°C (32-158°F) accommodates diverse data center climates. Duplex LC/UPC fiber connectors provide standardized interfaces compatible with existing patch panel infrastructure. The module's compact 5x4x2-inch form factor optimizes rack space utilization without compromising signal integrity. **Value Proposition:** Beyond technical excellence, this transceiver offers significant economic advantages. Free standard shipping on orders over $99 and availability from multiple U.S. warehouses (Danville, CA and Beaufort, SC) ensures rapid delivery. Custom brand programming enables OEM and reseller partners to deploy branded solutions. The 90-day limited warranty protects your investment while custom availability options support evolving business requirements. **Deployment Applications:** Ideal for campus networking, disaster recovery site connectivity, metro-area network expansion, and hybrid cloud infrastructure. Organizations migrating to 100GB architectures benefit from this transceiver's seamless integration with existing singlemode fiber investments and Mellanox infrastructure. Choose the JBX01399 for proven performance, comprehensive compliance, and exceptional value in mission-critical 100GB optical connectivity solutions.