The JBX02390 25GBASE-SR SFP28 transceiver represents a critical component for modern high-speed network deployments. This optical transceiver module is specifically designed to deliver 25 Gigabit Ethernet performance over multimode fiber infrastructure, making it ideal for organizations upgrading their network backbone without requiring expensive single-mode fiber installations. **Technical Specifications:** Operating at 850nm wavelength, this SFP28 transceiver achieves impressive transmission distances of up to 400 meters over OM4 multimode fiber cabling—sufficient for most campus networks and data center applications. The duplex LC/UPC connectors provide secure, low-loss fiber connections, while the metal case with integrated laser transmitter ensures long-term reliability and performance consistency. Qualified to IEEE 802.3by standards, this module guarantees interoperability with standards-compliant equipment. **Compatibility and Integration:** Directly compatible with Extreme Networks 10503 systems and other qualified 25G infrastructure, the JBX02390 simplifies network expansion and equipment refresh cycles. Custom brand programming is available for organizations requiring OEM labeling or specific configurations. **Safety and Compliance:** This transceiver meets rigorous safety and environmental standards, including Class 1 Laser certification, UL/FDA approval (21CFR 1040.10), and TUV certification. Full RoHS and ELV compliance ensures environmentally responsible operation and disposal. **Operating Conditions:** Rated for operating temperatures from 0 to 70°C (32 to 158°F), this module functions reliably in diverse data center and network facility environments. The compact SFP28 form factor (5x4x2 dimensions) fits standard transceiver slots without special accommodation requirements. **Value Proposition:** With free standard shipping on orders over $99 and a 90-day limited warranty, this transceiver offers excellent value for network infrastructure investments. Whether upgrading existing networks or building new deployments, the JBX02390 delivers proven 25G performance with industry-leading reliability.