The JBX01378 100GBASE-BX80 QSFP28 Transceiver represents enterprise-grade optical connectivity designed for today's demanding network infrastructure requirements. As a direct compatible replacement for Cisco's QSFP-100G-BX80D-S, this transceiver delivers exceptional performance and reliability at competitive pricing. **Key Performance Features:** Operating at 100GB/s data rates, the BX80-D transceiver achieves 80-kilometer reach over standard singlemode fiber (ITU-T G.652D compatible). The simplex LC/UPC fiber configuration provides unidirectional transmission, optimizing performance for specific directional network requirements. With 9/125 micron singlemode fiber core specifications, it maintains signal integrity across extended distances without regeneration. **Technical Specifications:** The transceiver meets IEEE 802.3bm and QSFP28 MSA (Multi-Source Agreement) standards, ensuring interoperability across multi-vendor environments. Its compact 5x4x2mm form factor fits standard QSFP28 cage slots, supporting high-density port configurations. Metal case construction with integrated laser transmitter technology provides superior environmental protection and thermal management for sustained operation. **Safety & Compliance:** Comprehensively certified to Class 1 Laser safety standards, TÜV, UL/FDA 21CFR 1040.10, and EU RoHS/ELV directives. These certifications guarantee workplace safety, environmental compliance, and regulatory adherence across global markets. **Deployment Applications:** Ideal for campus backbone interconnects, metro-area network extensions, disaster recovery links, and high-capacity data center-to-remote-site communications. The simplex configuration suits unidirectional feeds in hybrid wavelength-division multiplexing (WDM) architectures. **Operational Specifications:** Extended temperature rating (0-70°C) supports diverse deployment environments from climate-controlled data centers to outdoor cabinet installations. Custom brand programming available for white-label OEM integration. **Warranty & Support:** Includes 90-day limited warranty with free standard shipping on orders exceeding $99, shipped from US distribution centers in Danville, CA and Beaufort, SC. The product is manufactured in Vietnam and China under strict quality control protocols. Choose this transceiver for proven 100GB optical performance, extensive compatibility, and enterprise reliability.