The JBX01371 100GBASE-BX20-U QSFP28 transceiver module represents a premium solution for high-speed optical networking applications requiring reliable long-distance data transmission. Engineered to meet the demanding requirements of modern data centers and enterprise networks, this module delivers exceptional performance and compatibility. **Technical Specifications:** This QSFP28 optical transceiver operates at 100GBASE speed over single-mode fiber with a maximum transmission distance of 20 kilometers. The simplex LC/UPC connector configuration ensures reliable signal transmission with minimal insertion loss. The module features a 9/125 micrometer singlemode fiber core, optimized for long-distance communications without signal degradation. **Design and Durability:** Constructed with a robust metal case and integrated laser transmitter, the JBX01371 withstands demanding network environments. Operating temperature range of 0 to 70°C accommodates diverse deployment scenarios from climate-controlled data centers to equipment rooms with variable conditions. Compact dimensions (5x4x2mm) enable seamless integration into existing QSFP28 port configurations. **Standards Compliance and Certification:** This transceiver fully complies with IEEE 802.3bm specifications and QSFP28 MSA standards, ensuring interoperability across compatible equipment. RoHS and ELV directive compliance demonstrates environmental responsibility. Comprehensive safety certifications including Class 1 Laser designation (LN #50 7/2001), UL/FDA approval, and TUV verification provide confidence in reliable operation. **Arista Compatibility:** Designed as a direct replacement for Arista QSFP-100G-LR20BD-U modules, this transceiver enables seamless upgrades and network expansions. Custom brand programming options accommodate enterprise requirements for asset tracking and standardization. **Advantages:** Free standard shipping on orders exceeding $99 reduces deployment costs. Sourced from multiple manufacturing facilities (Vietnam, China), ensuring supply chain reliability. Backed by a 90-day limited warranty, with dedicated customer support available through multiple U.S. shipping locations in California and South Carolina.