The JBX02191 1000BASE-BX40-U SFP transceiver is a professional-grade optical module engineered for extended-range network connectivity in demanding applications. Operating at 1 Gigabit per second over single-mode fiber (SMF), this transceiver supports transmission distances up to 40 kilometers, making it ideal for campus area networks, metropolitan networks, and long-haul enterprise deployments. Key Technical Specifications: This module features simplex LC/UPC fiber connectors and utilizes bidirectional transmission technology beyond standard IEEE 802.3ah specifications. The 9/125 micron single-mode fiber core ensures superior signal integrity and minimal attenuation over extended distances. Operating at 1310/1490nm wavelengths, the transceiver delivers consistent performance while maintaining compatibility with existing Extreme Networks infrastructure, specifically replacing OEM part number 10057H-40K. Durable Construction & Safety: Built with a robust metal case housing an integrated laser transmitter, the JBX02191 withstands industrial operating conditions from -40°C to 85°C. The module exceeds safety requirements with Class 1 Laser certification, UL/FDA compliance (21CFR 1040.10), and TUV verification. Full RoHS and ELV directive compliance ensures environmental responsibility. Perfect for Enterprise Networks: Ideal for network administrators and IT professionals upgrading network infrastructure, this transceiver delivers reliable long-distance connectivity without the expense of single-mode trunk cables. Whether expanding data center connectivity, connecting remote offices, or building metropolitan area networks, the JBX02191 provides the performance and compatibility your enterprise requires. Practical Benefits: Simplified deployment with standard SFP form factor integration, custom brand programming available for OEM applications, comprehensive 90-day limited warranty, and free standard shipping on qualifying orders. The module's extended-reach BiDi technology maximizes efficiency in single-fiber deployments.