The JBX01228 40GBASE-LR4 QSFP+ transceiver is a cutting-edge optical module engineered for enterprise-grade network infrastructure. This high-performance transceiver supports 40 gigabit per second data rates over singlemode fiber, achieving transmission distances up to 10 kilometers—ideal for metropolitan area networks (MANs) and large data center deployments. **Key Features:** This module utilizes a 9/125 singlemode fiber core with duplex LC/UPC connectors, providing precise optical coupling and minimal signal loss. The LR4 (Long Reach, 4-channel) design employs wavelength-division multiplexing (WDM) technology across four distinct wavelengths, maximizing capacity while maintaining signal integrity over extended distances. **Technical Specifications:** Operating across a wide temperature range of 0 to 70°C (32 to 158°F), the transceiver accommodates various deployment environments. The compact QSFP+ form factor (5mm × 4mm × 2mm) ensures efficient rack space utilization. Power consumption is optimized for energy-efficient data center operations. **Compatibility & Reliability:** Direct compatibility with Dell systems (replacing P/N 407-BBGL and 407-BBGN) simplifies integration into existing infrastructure. Qualified to IEEE 802.3ba and SFF-8436 standards, this module guarantees interoperability and performance consistency. Custom brand programming is available for enterprise deployments requiring specific configuration requirements. **Compliance & Safety:** Full RoHS/ELV compliance meets EU Directive 2002/95/EC environmental standards. Multiple safety certifications including Class 1 Laser designation, UL/FDA compliance (21CFR 1040.10), and TUV approval ensure safe operation in any environment. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99 with fulfillment from convenient U.S. locations (Danville, CA and Beaufort, SC). All units include a 90-day limited warranty, providing confidence in your purchase. Perfect for network administrators, data center managers, and telecommunications professionals seeking reliable, standards-compliant optical connectivity solutions.