The JBX01478 100GBASE-PLR4 QSFP28 transceiver module is a professional-grade optical component engineered for high-speed network deployments requiring extended reach over single-mode fiber infrastructure. This 100GB transceiver combines cutting-edge technology with robust construction to deliver exceptional performance and reliability. **Technical Specifications:** Operating at 1310nm wavelength, this QSFP28 module achieves 100GB data rates with a maximum transmission distance of 10km over 9/125 single-mode fiber (SMF). The compact form factor (5.0" x 4.0" x 2.0") integrates seamlessly into standard QSFP28 slots, while the MTP/MPO connector interface ensures secure, tool-free connections. **Compatibility & Integration:** Designed as a drop-in replacement for Arista QSFP-100G-XCWDM4 transceivers, this module provides complete compatibility with Arista switching infrastructure without requiring firmware modifications. The transceiver qualifies to IEEE 802.3bm and QSFP28 MSA specifications, ensuring interoperability across manufacturer ecosystems. **Quality & Compliance:** Manufactured with premium materials including metal case housing and integrated laser transmitter, this transceiver meets stringent international standards. Full RoHS and ELV compliance ensures environmental responsibility, while Class 1 laser certification and TUV/UL/FDA approvals provide comprehensive safety assurance. **Operating Parameters:** With an operating temperature range of 0-70°C, the module maintains stable performance across standard data center and outdoor deployment scenarios. Custom brand programming is available for OEM requirements. **Value Proposition:** This high-performance transceiver delivers enterprise-grade reliability at competitive pricing, backed by a 90-day limited warranty. Free standard shipping on orders exceeding $99 and availability from multiple U.S. fulfillment centers ensures rapid delivery. Whether upgrading existing networks or building new infrastructure, the JBX01478 provides the performance, compatibility, and reliability data center professionals demand.