The JBX01200 40GBASE-ER4 QSFP+ Transceiver represents cutting-edge optical networking technology, specifically designed for organizations requiring reliable, high-capacity data transmission across extended distances. As a direct replacement for Brocade 40G-QSFP-ER4 modules, this transceiver delivers exceptional performance and compatibility. **Technical Excellence** This optical transceiver operates at 40GB data rates, utilizing advanced laser transmission technology within a precision-engineered metal case. The module supports 40km transmission over singlemode fiber (SMF), making it ideal for metropolitan area networks and inter-campus connectivity. With a 9/125 micron singlemode fiber core and duplex LC/UPC connectors, the JBX01200 ensures optimal signal integrity and minimal insertion loss. **Compliance and Certification** Manufactured to the highest standards, this module meets IEEE 802.3ba specifications and qualifies under SFF-8436 industry guidelines. Safety certifications include Class 1 Laser designation, TUV approval, UL/FDA compliance (21CFR 1040.10), and full RoHS/ELV directive adherence. These certifications guarantee safe operation in professional environments. **Reliable Performance** The transceiver operates across a wide temperature range (0-70°C / 32-158°F), ensuring consistent performance in diverse deployment scenarios. Built with durable materials and precision optics, it delivers stable, low-latency transmission essential for mission-critical applications. **Ideal Applications** - Enterprise data centers requiring cost-effective 40G connectivity - Campus network backbone implementations - Carrier-grade metropolitan area networks - High-speed inter-data center links - Content delivery network infrastructure **Value Proposition** Shipped from strategically located warehouses in Danville, CA and Beaufort, SC, the JBX01200 includes free standard shipping on qualifying orders. Custom brand programming is available for organizations requiring OEM-specific configurations. The 90-day limited warranty provides peace of mind for your networking investment. Choose the JBX01200 for proven Brocade compatibility, enterprise-grade reliability, and cost-effective extended-range optical networking.