The JBX01246 40GBASE-LR4L QSFP+ Optical Transceiver represents a sophisticated solution for enterprise-class network infrastructure requiring high-speed, long-distance optical connectivity. This module is engineered to meet the demanding requirements of modern data centers, carrier networks, and large-scale enterprise deployments. **Performance Specifications:** Operating at 40Gbps across a 2km range, the JBX01246 utilizes 40GBASE-LR4L technology to deliver four independent 10Gbps wavelengths over a single strand of 9/125μm single mode fiber. This dense wavelength architecture maximizes bandwidth efficiency while maintaining backward compatibility with existing network infrastructure. The module achieves full compliance with IEEE 802.3ba standards, ensuring interoperability across vendor ecosystems. **Design & Build Quality:** Constructed with a robust metal case housing advanced laser transmitter components, this transceiver is built for reliability in demanding network environments. The duplex LC/UPC fiber connectors provide precise optical alignment and minimal insertion loss, critical factors for maintaining signal integrity over extended distances. Compact dimensions (5.0" x 4.0" x 2.0") ensure compatibility with standard QSFP+ module slots. **Compatibility & Integration:** Factory-certified as a replacement for Cisco WSP-Q40GLR4L modules, the JBX01246 drops seamlessly into existing Cisco infrastructure without requiring additional configuration. Custom brand programming is available for OEM and reseller applications, providing flexibility for integration into private-label solutions. **Compliance & Safety:** Multiple certifications underscore the product's commitment to safety and environmental responsibility: • RoHS/ELV compliant (EU Directive 2002/95/EC) • Class 1 Laser safety certification • UL/FDA and TUV validation • Harmonization Code: 8544.70.0000 **Temperature & Reliability:** With an operating temperature range from 0-70°C (32-158°F), the module performs reliably across diverse climate conditions typical of data center and field deployment scenarios. The 90-day limited warranty provides peace of mind for critical network investments. **Value Proposition:** This solution offers exceptional value for network operators seeking to upgrade connectivity without wholesale infrastructure replacement. Free standard shipping on orders exceeding $99 further reduces total cost of ownership. The module's proven compatibility with Cisco platforms eliminates integration risks while delivering performance that rivals OEM alternatives at competitive pricing. **Ideal Applications:** • Data center campus interconnects • Metropolitan area network (MAN) backbone connections • High-speed server farm uplinks • Redundant network path provisioning • Carrier-grade network expansion Whether you're architecting new network infrastructure or expanding existing capacity, the JBX01246 delivers the performance, reliability, and value demanded by modern network professionals.