The JBX01225 is a premium-grade 40GBASE-LR4 QSFP+ optical transceiver engineered for enterprise-class network infrastructure requiring extended reach connectivity. This transceiver delivers certified 40 gigabit per second data rates across 10 kilometers of single-mode fiber, making it ideal for campus networks, metropolitan area connections, and high-capacity data center uplinks. **Key Features & Specifications:** Designed for direct compatibility with Cisco QSFP-40G-LR4 architecture, this transceiver accepts OEM part numbers QSFP-40G-LR4, QSFP-40GE-LR4, MA-QSFP-40G-LR4, and QSFP-40G-LR4-S. The duplex LC/UPC fiber connector interface ensures reliable, low-loss signal transmission, while the 9/125 micrometer single-mode fiber core supports long-distance propagation with minimal attenuation. **Technical Excellence:** Manufactured to stringent IEEE 802.3ba and SFF-8436 standards, this transceiver combines precision engineering with proven reliability. The metal case housing protects internal laser transmitter components, while comprehensive safety certifications (Class 1 laser, TUV, UL, FDA 21CFR 1040.10) guarantee safe operation in any environment. **Compliance & Sustainability:** Fully RoHS/ELV compliant per EU Directive 2002/95/EC, this transceiver meets modern environmental standards. Manufacturing locations in Vietnam and China ensure consistent quality control. **Perfect For:** Data center managers, telecom providers, network integrators, and enterprises requiring reliable 40GB connectivity. Custom brand programming is available for resellers and OEM applications. **Warranty & Support:** 90-day limited warranty included. Ships from multiple US locations with free standard shipping on orders over $99. Operating temperature range: 0-70°C (32-158°F) supports diverse deployment scenarios.