The JBX01204 40GBASE-ER4 QSFP+ transceiver module represents enterprise-grade optical transmission technology designed for mission-critical network deployments. This extended-range transceiver excels in scenarios requiring reliable 40km transmission distances over single-mode fiber, providing network administrators with a dependable solution for inter-building, campus, or metropolitan area network connectivity. Key Technical Specifications: The module operates at 40GB data rates compliant with IEEE 802.3ba standards and supports the industry-standard QSFP+ form factor. Its 40km reach over 9/125 singlemode fiber makes it significantly more cost-effective than shorter-range alternatives for long-distance applications. The duplex LC/UPC connector configuration provides a secure, polished connection interface that minimizes back-reflection and signal degradation. Performance & Reliability: Operating across the 0-70°C temperature range, this transceiver maintains consistent performance in diverse environmental conditions. The metal case construction provides superior electromagnetic shielding and thermal management, while the integrated laser transmitter delivers precise signal generation. Forward Error Correction (FEC) capabilities enhance data integrity during transmission. Compatibility & Integration: Fully compatible with Extreme Networks 40G-QSFP-ER4-1 equipment and infrastructure, this module functions as a drop-in replacement for OEM part numbers 40G-QSFP-ER4-1, AA1404003-E6, and 10335. Custom brand programming is available for organizations requiring private-labeled solutions. Compliance & Certification: The transceiver meets stringent international standards including RoHS and ELV directives, with Class 1 laser certification ensuring safe operation. Full compliance with UL/FDA (21CFR 1040.10) and TUV requirements guarantees workplace safety and regulatory adherence. Warranty & Support: Backed by a 90-day limited warranty with free standard shipping on orders exceeding $99, this module offers exceptional value for network infrastructure investments. Ships from conveniently located U.S. distribution centers in California and South Carolina, ensuring rapid delivery.