The JBX02190 1000BASE-BX40-U SFP transceiver is a premium optical connectivity solution designed for organizations requiring extended-reach, high-reliability network infrastructure. This sophisticated module combines cutting-edge optical technology with robust engineering to deliver uncompromising performance in demanding network environments. **Technical Excellence** Built to SFF-8472 extended-reach BiDi specifications, this transceiver transcends standard IEEE 802.3ah limitations, enabling point-to-point connectivity over single-mode fiber at distances up to 40 kilometers. The dual-wavelength design (1310nm transmit/1490nm receive, or vice versa) enables full-duplex communication over a single fiber strand, optimizing infrastructure efficiency and reducing installation costs. **Superior Construction & Safety** The metal case with integrated laser transmitter ensures durability and reliable signal transmission. Multiple safety certifications—including Class 1 Laser designation, TUV, UL, and FDA compliance—guarantee safe operation in professional environments. RoHS and ELV compliance demonstrates commitment to environmental sustainability without sacrificing performance. **Seamless Integration** The simplex LC/UPC connector provides industry-standard connectivity with minimal insertion loss and maximum return loss performance. Compatible with 9/125 singlemode fiber, this transceiver integrates effortlessly into existing Extreme Networks infrastructures, specifically replacing the OEM part number 10057-40K. **Operational Reliability** With a 90-day limited warranty and proven performance across 0-70°C operating temperatures, this transceiver delivers consistent uptime for mission-critical applications. Custom brand programming is available for organizations requiring proprietary configuration. **Applications & Use Cases** Ideal for metropolitan area networks (MANs), campus interconnects, data center-to-remote site links, and carrier-class deployments. Perfect for organizations upgrading from shorter-distance modules or standardizing on extended-reach optical infrastructure. **Complimentary Service** Free standard shipping on orders exceeding $99, with convenient fulfillment from California or South Carolina distribution centers.