The HPE X140 40G QSFP+ LC LR4 SM XCVR is a high-performance optical transceiver module designed for enterprise networking applications requiring reliable 40 gigabit Ethernet connectivity. This transceiver module features QSFP+ form factor compatibility and supports long-range data transmission over single-mode fiber optic cables with LC duplex connectors. Operating at a wavelength of 1310 nm, the module delivers data transfer rates up to 40 Gbps with a maximum transmission distance of 10 kilometers, making it suitable for data center interconnects and campus network backbones. The LR4 (Long Reach 4) technology enables transmission over four wavelengths using coarse wavelength division multiplexing for efficient bandwidth utilization. This transceiver is engineered for compatibility with HPE networking equipment and meets industry standards for 40GBASE-LR4 applications. Constructed with durable materials and precision optical components, the module ensures stable performance in demanding network environments. The compact design allows for high-density port configurations in switches and routers while maintaining optimal thermal management. The operating temperature range is from 0 °C to 70 °C, ensuring reliable functionality in various data center conditions. Power consumption is typically under 3.5 W during operation, contributing to energy-efficient network infrastructure. The module includes digital diagnostics monitoring capabilities for real-time performance tracking and troubleshooting. This transceiver supports hot-pluggable installation for convenient maintenance and upgrades without network downtime. Backward compatibility with lower speed interfaces is not supported as this is specifically designed for 40 gigabit Ethernet applications. The product is tested for interoperability with HPE networking platforms and complies with relevant industry specifications for optical transceiver performance and safety.