The JBX02410 25GBASE-ER SFP28 optical transceiver represents enterprise-class networking excellence, delivering robust 25 Gigabit Ethernet transmission over extended distances. This precision-engineered module is specifically configured for 40-kilometer spans on singlemode fiber infrastructure, making it ideal for metropolitan area networks, regional data center connectivity, and large campus interconnections. Key Technical Specifications: Operating at 1310nm wavelength, the transceiver utilizes proven Extended Range technology optimized for 9/125 singlemode fiber. The duplex LC/UPC fiber connector configuration ensures reliable, low-loss connections with minimal back-reflection. Supporting IEEE 802.3by specifications, this module guarantees interoperability and performance consistency across mixed-vendor deployments. Design & Construction: Built with a durable metal case housing precision laser transmitter components, the JBX02410 withstands demanding datacenter and network environments. The compact 5x4x2mm form factor integrates seamlessly into existing SFP28 infrastructure without requiring additional physical modifications or retrofitting. Compliance & Certifications: Fully RoHS and ELV compliant per EU Directive 2002/95/EC, this transceiver meets stringent environmental standards. Safety certifications include Class 1 Laser designation, FDA 21CFR 1040.10 compliance, and TUV/UL approval, ensuring safe operation in all deployment scenarios. Manufacturing facilities in Vietnam and China maintain strict quality control protocols. Performance Reliability: With operating temperatures spanning 0-70°C (32-158°F), the module delivers consistent performance across seasonal variations and equipment room conditions. The 90-day limited warranty provides confidence in purchase decisions. Applications & Compatibility: Ideal for organizations deploying Extreme Networks infrastructure requiring extended-reach connectivity. Common applications include data center interconnects, disaster recovery links, metropolitan networks, and service provider core segments. Value Proposition: As a direct replacement for Extreme Networks P/N 25G-ER-SFP40KM, this transceiver offers cost-effective network expansion without vendor lock-in concerns. Free standard shipping on orders over $99 and custom brand programming availability provide additional flexibility for enterprise deployments.