The JBX01369 100GBASE-BX20-D QSFP28 transceiver represents a premium solution for high-speed optical networking requirements. Engineered to meet IEEE 802.3bm specifications, this module delivers exceptional performance in demanding enterprise environments while maintaining cost efficiency compared to OEM alternatives. **Technical Specifications:** Operating at 100Gb/s, this transceiver utilizes advanced laser transmission technology housed in a durable metal case. The 20km maximum transmission distance over single-mode fiber (9/125μm core) makes it suitable for metropolitan area networks and extended campus connectivity. The simplex LC/UPC connector ensures reliable, low-insertion-loss connections with industry-standard compatibility. **Performance & Compatibility:** Qualified to both QSFP28 MSA and SFF-8665 specifications, this module seamlessly integrates into Cisco environments, directly replacing the QSFP-100G-BX20D-S component. Its compact QSFP28 form factor maximizes port density while maintaining thermal efficiency across 0-70°C operating temperatures. **Safety & Compliance:** This optical transceiver meets stringent international standards including RoHS/ELV directives and carries Class 1 laser safety certifications from TUV, UL, and FDA (21CFR 1040.10). These certifications ensure safe operation in controlled network environments with appropriate handling procedures. **Applications & Use Cases:** Ideal for data center interconnections, metro network extensions, and campus backbone upgrades, this transceiver excels in scenarios requiring reliable 100G connectivity without the cost premium of longer-reach alternatives. Organizations can leverage this module for disaster recovery links, inter-building connections, and high-capacity network refresh initiatives. **Custom Programming Available:** Flex licensing options support custom brand programming, enabling OEM integration and white-label deployment scenarios. Backed by a 90-day limited warranty and shipped with free standard shipping from US locations (Danville, CA or Beaufort, SC), this represents a practical investment in network infrastructure reliability.