The JBX01415 100GBASE-ER4 QSFP28 Transceiver represents a premium solution for organizations requiring robust 100Gbps optical connectivity over extended distances. Specifically designed to deliver 40km transmission capabilities across singlemode fiber infrastructure, this module is engineered for enterprise-grade performance and reliability. **Technical Specifications & Performance:** This QSFP28 transceiver operates at 100 Gigabits per second and supports singlemode fiber with a 9/125 micron core. The duplex LC/UPC connector configuration ensures precise optical alignment and minimal signal loss. Qualified to IEEE 802.3bm specifications and QSFP28 MSA standards, it guarantees interoperability with certified equipment and infrastructure. **Key Features & Benefits:** - 100Gbps data rate for bandwidth-intensive applications - 40km range capability eliminates need for regeneration over metro distances - Duplex LC/UPC connectors for secure, low-loss connections - Metal case construction provides durability and electromagnetic shielding - Cisco QSFP-100G-ER4-S compatible for seamless integration - Custom brand programming available for OEM requirements - RoHS/ELV compliant and Class 1 Laser certified **Applications & Use Cases:** Ideal for data center interconnects, metropolitan area networks, campus connectivity, and enterprise backbone infrastructure. Perfect for organizations upgrading to 100G networking or replacing existing Cisco QSFP-100G-ER4-S modules. **Quality Assurance:** Manufactured with precision engineering and comprehensive quality testing. Includes UL/FDA certifications (21CFR 1040.10) and TUV approval. Operating temperature range of 0-70°C suits varied deployment environments. Backed by a 90-day limited warranty and available with free standard shipping on qualifying orders from US locations (Danville, CA or Beaufort, SC). **Compatibility & Integration:** Directly replaces OEM part number QSFP-100G-ER4-S. Supports standard optical networking protocols and integrates seamlessly into existing Cisco-based infrastructure. Custom brand programming options available for organizations requiring personalized module identification.