The JBX01343 100GBASE-SR4 QSFP28 transceiver represents cutting-edge optical networking technology designed for organizations requiring high-speed, reliable data transmission in demanding environments. This comprehensive overview details everything you need to know about this enterprise-grade component. **Technical Specifications:** This transceiver operates at 850nm wavelength, supporting 100GB data rates across multimode fiber infrastructure. With a maximum transmission distance of 100 meters over OM4 MMF (OM3 compatible for shorter distances), it delivers excellent performance for data center interconnects, switch stacking, and campus backbone applications. The QSFP28 form factor enables exceptional port density while maintaining backwards compatibility with existing network investments. **Compatibility & Integration:** Purpose-built for NVIDIA Mellanox ecosystems, the JBX01343 directly replaces OEM part numbers 980-9I149-00CS00 and MMA1B00-C100D. It's fully qualified to IEEE 802.3bm standards, ensuring interoperability across heterogeneous network environments. MTP/MPO-12 connectors provide industry-standard connectivity recognized globally. **Quality & Compliance:** Manufactured to the highest standards with RoHS and ELV directive compliance, this transceiver meets stringent safety requirements. Class 1 laser certification, TUV, and UL/FDA approval (21CFR 1040.10) ensure workplace safety and regulatory compliance. Metal case construction with integrated laser transmitter provides durability and thermal management. **Operational Excellence:** With an extended operating temperature range of 0-70°C (32-158°F), the module performs reliably in diverse data center climates. Custom brand programming is available for OEM deployments requiring personalized identification. The compact 5x4x2 inch dimensions maximize space efficiency in high-density environments. **Value & Support:** Backed by a 90-day limited warranty and available with free standard shipping on orders exceeding $99, this transceiver delivers exceptional value. Ships from dual U.S. locations (Danville, CA and Beaufort, SC) ensuring rapid delivery to network operators nationwide. **Applications:** Ideal for: data center upgrades, enterprise campus networks, cloud infrastructure, high-frequency trading environments, and any deployment requiring reliable, standards-compliant 100GB connectivity over multimode fiber.