The JBX01385 100GBASE-CWDM4 QSFP28 transceiver represents the ideal solution for organizations requiring high-capacity, cost-effective optical interconnectivity. This cutting-edge module is engineered to deliver exceptional performance and reliability for modern data center and campus networks. **Key Features and Specifications:** This optical transceiver operates at 100GB data rates with a maximum transmission distance of 2 kilometers over singlemode fiber (9/125 micron core). The QSFP28 form factor provides a compact solution that integrates seamlessly into existing infrastructure, while the Duplex LC/UPC connectors ensure straightforward installation and reliable connections. The module's metal housing with integrated laser transmitter provides durability and optimal optical performance. **Compatibility and Integration:** The JBX01385 is explicitly designed as a compatible replacement for Extreme Networks equipment, including part numbers 100G-CWDM4-QSFP2KM, 100G-QSFP28-CWDM4-2KM, and others. This compatibility eliminates vendor lock-in while maintaining full functionality and performance standards. **Safety, Compliance, and Certification:** This transceiver meets stringent international standards including IEEE 802.3bm, QSFP28 MSA, and SFF-8665 specifications. It carries Class 1 Laser certification, TUV, UL/FDA approvals, and full RoHS/ELV compliance (EU Directive 2002/95/EC), ensuring safe operation in enterprise environments. **Performance and Reliability:** Operating across a wide temperature range from 0-70°C (32-158°F), this module maintains consistent optical performance in diverse deployment scenarios. The precision laser transmitter and optical design deliver superior signal integrity, while the robust metal case protects against environmental stress. **Value and Support:** Each unit includes a 90-day limited warranty and qualifies for custom brand programming upon request, perfect for large-scale deployments. With free standard shipping on orders over $99 and availability from multiple distribution centers, this transceiver offers exceptional value for budget-conscious IT departments seeking enterprise-grade performance without premium pricing. **Ideal Applications:** Perfect for 2km metropolitan area network connections, data center campus interconnects, and high-speed backbone deployments where reliable 100GB connectivity is essential.