The JBX02201 1000BASE-BX40-U SFP transceiver represents cutting-edge optical networking technology designed for demanding enterprise and service provider environments. As a direct Cisco GLC-BX40-U-I compatible module, this extended-reach transceiver eliminates the need for expensive original equipment manufacturer parts while maintaining full compatibility and performance standards. **Technical Specifications:** This single-mode fiber (SMF) transceiver utilizes BiDi technology with dual wavelengths (1310/1550nm) to enable simultaneous transmission and reception over a single fiber strand. The 40km transmission capability over 9/125 micron single-mode fiber makes it ideal for metropolitan area networks (MANs) and long-distance interconnects between data centers, office campuses, and remote facilities. **Superior Connectivity:** The simplex LC/UPC connector provides low insertion loss and exceptional return loss characteristics, ensuring signal integrity over extended distances. The UPC (Ultra Physical Contact) design minimizes back-reflection, critical for reliable long-distance transmission at gigabit speeds. **Compliance & Certification:** Fully RoHS and ELV compliant, this transceiver meets rigorous environmental and safety standards. Class 1 laser certification (LN #50 7/2001) with TUV, UL, and FDA approval (21CFR 1040.10) ensures safe operation in any networking environment. Qualified to industry-standard SFF-8472 specifications, supporting extended-reach BiDi technology beyond IEEE 802.3ah requirements. **Durability & Reliability:** Constructed with a robust metal case and advanced laser transmitter, this module withstands harsh operating conditions with an extended temperature range of -40°C to 85°C (-40°F to 185°F). The 90-day limited warranty provides peace of mind for critical network deployments. **Cost-Effective Solution:** As a third-party alternative to original Cisco modules, this transceiver delivers enterprise-grade performance at competitive pricing. Custom brand programming is available for resellers and integrators requiring OEM labeling. **Perfect For:** Enterprise data centers, service provider networks, campus network extensions, disaster recovery sites, and any application requiring reliable 1Gbps connectivity over distances exceeding 10km. The BiDi technology enables efficient single-fiber deployments, reducing installation complexity and fiber run requirements. Ensure optimal performance by verifying compatibility with your specific Cisco equipment. Ships from multiple U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99.