The JBX01210 is a premium 40GBASE-ER4 QSFP+ optical transceiver engineered for demanding long-distance network applications. This module delivers exceptional performance for organizations requiring high-speed, reliable connectivity over extended singlemode fiber distances. **Technical Specifications:** Operating at 40 gigabits per second, this transceiver supports transmission distances up to 40 kilometers over 9/125 singlemode fiber, making it ideal for metropolitan area networks (MANs) and wide area network (WAN) applications. The duplex LC/UPC fiber connector ensures secure, low-loss connections and is compatible with standard network infrastructure. Compact dimensions (5.0" x 4.0" x 2.0") allow easy integration into existing network equipment. **Compliance and Safety:** Fully qualified to IEEE 802.3ba specifications and SFF-8436 form factor standards, this transceiver meets all major regulatory requirements. Class 1 Laser certification, UL/FDA approval per 21CFR 1040.10, and TUV validation confirm its safety. RoHS and ELV directive compliance demonstrate environmental responsibility and future-proof design. **Compatibility and Flexibility:** Designed as a direct replacement for Ruckus E40G-QSFP-ER4 modules, this transceiver integrates seamlessly into existing Ruckus networks. Custom brand programming is available for enterprise deployments requiring proprietary configurations. **Reliability and Support:** Backed by a 90-day limited warranty and manufactured in Vietnam or China using premium components. Operating temperature range of 0-70°C ensures consistent performance in various deployment environments. **Applications:** Ideal for data center interconnects, high-speed backbone networks, long-haul service provider deployments, and enterprise campus extensions where 40GB singlemode fiber connectivity is required. Ensure proper fiber optic handling protocols during installation. Free standard shipping available on orders exceeding $99, with shipment from convenient U.S. distribution centers.