The JBX02173 1000BASE-BX40-D SFP transceiver represents a premium solution for organizations seeking reliable, extended-reach optical connectivity. Designed to be fully compatible with Extreme Networks MGBIC-BX40-D modules, this transceiver provides exceptional performance for long-distance network deployments without premium pricing. **Technical Excellence** This simplex optical transceiver supports 1000BASE-BX40 transmission standards, delivering 1GB data rates over impressive 40-kilometer distances across single-mode fiber infrastructure. Operating at 1490/1310nm wavelengths, the transceiver utilizes advanced BiDi (bidirectional) technology that extends well beyond basic IEEE 802.3ah specifications, enabling superior performance for complex network topologies. **Form Factor & Connectivity** The compact SFP (Small Form-Factor Pluggable) design integrates directly into existing network infrastructure without requiring additional chassis modifications. The simplex LC/UPC connector ensures secure, industry-standard connections with minimal signal loss. The 9/125μm single-mode fiber core supports long-distance transmission while maintaining signal integrity. **Safety & Compliance** Rigorous safety certifications include Class 1 Laser designation, UL/FDA 21CFR 1040.10 approval, and TUV verification. Full RoHS and ELV directive compliance demonstrates commitment to environmental sustainability. SFF-8472 qualification ensures interoperability with diverse network equipment. **Performance Specifications** Operating temperature range of 0-70°C accommodates diverse deployment environments from controlled data centers to outdoor installations. The metal case with integrated laser transmitter provides robust protection against physical stress and environmental factors. **Ideal Applications** Perfect for ISPs expanding backbone networks, data centers implementing disaster recovery solutions, enterprise campuses connecting remote facilities, and telecommunications providers requiring cost-effective long-distance connectivity. **Compatibility & Support** Serves as direct replacement for MGBIC-BX40-D, AA1419077, and 10056-40K modules. Custom brand programming available for OEM requirements. Backed by 90-day limited warranty. Free standard shipping on qualifying orders from convenient U.S. distribution centers.