The JBX01742 10GBASE-BX40-U SFP+ optical transceiver module is engineered for enterprise-grade long-distance network connectivity, delivering 10 gigabit per second data rates over single-mode fiber spans extending to 40 kilometers. This advanced optical module represents a cost-effective solution for organizations requiring reliable, standards-compliant network infrastructure without the premium pricing of OEM alternatives. **Technical Specifications & Performance:** This transceiver utilizes simplex LC/UPC connectors with a 9/125 micrometer single-mode fiber core, optimized for minimal attenuation and signal degradation over extended distances. The integrated laser transmitter and metal case construction provide electromagnetic shielding and thermal stability, ensuring consistent performance in demanding network environments. Operating across a broad temperature range from 0°C to 70°C (32°F to 158°F), the module adapts to various deployment scenarios. **Standards & Certifications:** Fully qualified to IEEE 802.3ae specifications, the JBX01742 meets SFF-8431 and SFF-8472 standards for optical transceiver compatibility. The module carries comprehensive safety certifications including Class 1 Laser classification, TUV approval, UL certification, and FDA compliance (21CFR 1040.10). It adheres to the EU RoHS Directive 2002/95/EC, ensuring environmental responsibility and regulatory compliance for global deployments. **Cisco Compatibility:** Designed as a direct replacement for Cisco's SFP-10G-BX-U40 and MA-SFP-10GB-BX40-U modules, this transceiver integrates seamlessly into existing Cisco infrastructure without requiring firmware updates or network reconfiguration. Organizations can reduce operational costs while maintaining full compatibility and performance parity with original equipment manufacturer modules. **Applications & Use Cases:** Ideal for data center interconnections, telecommunications networks, metropolitan area networks (MANs), and enterprise wide area networks (WANs). Particularly suited for organizations requiring cost-effective long-distance connectivity without sacrificing reliability or performance standards. **Quality & Support:** This optical module includes a 90-day limited warranty and ships from strategically located distribution centers in Danville, CA and Beaufort, SC, ensuring rapid delivery. Free standard shipping applies to orders exceeding $99. Custom brand programming services are available to meet specific organizational requirements.