The JBX01252 40GBASE-PLRL4 QSFP+ transceiver represents cutting-edge optical transmission technology designed for modern high-speed network deployments. This advanced module is specifically engineered to meet the demanding requirements of enterprise data centers, service providers, and large-scale network infrastructure projects. **Technical Specifications and Performance:** Operating at 40GB per second, this QSFP+ module provides exceptional bandwidth for contemporary networking demands. The 1310nm wavelength transmission over single-mode fiber (9/125) enables reliable signal transmission across distances up to 1.4km, perfect for intra-datacenter connectivity and short-reach trunk applications. The MTP/MPO connector interface (12-fiber configuration) facilitates efficient, scalable fiber management while maintaining signal integrity. **Compatibility and Integration:** Purpose-built for Juniper networking platforms, this transceiver directly replaces the OEM JNP-QSFP-4X10GE-IR module, ensuring seamless integration into existing Juniper-based infrastructure without requiring firmware updates or reconfiguration. Full IEEE 802.3ba and SFF-8436 standard compliance guarantees interoperability across multiple platforms and vendor ecosystems. **Quality and Compliance:** Manufactured with precision engineering, the metal case housing and integrated laser transmitter deliver superior thermal management and electromagnetic shielding. Comprehensive safety certifications include Class 1 laser classification (LN #50 7/2001), TUV, UL/FDA approval, and 21CFR 1040.10 compliance. RoHS and ELV directive compliance ensures environmental responsibility and regulatory adherence. **Operational Reliability:** Wide operating temperature range (0-70°C) accommodates diverse deployment environments. The robust construction withstands rigorous handling and maintains performance consistency throughout its operational lifespan. 90-day limited warranty provides peace of mind and technical support. **Logistics and Support:** Ship-ready from strategically located US facilities (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming services available for OEM applications requiring proprietary identification or configuration.