The Cisco QSFP-100G-LR4-S QSFP28 Optical Transceiver is a high-performance 100 Gigabit Ethernet (100GBASE-LR4) module designed for long-range, high-speed optical connectivity in data centers, enterprise core networks, and service provider infrastructures. Built for reliability and efficiency, it delivers seamless 100G networking over single-mode fiber (SMF) with support for distances up to 10 kilometers.

Featuring the compact QSFP28 form factor, this transceiver enables high-density deployments while maintaining low power consumption of approximately 3.5W, making it ideal for modern high-capacity networking environments. The module uses LC duplex connectors and 1310 nm LAN-WDM technology to provide stable and efficient long-distance optical transmission.

Compliant with the IEEE 802.3bm 100GBASE-LR4 standard, the QSFP-100G-LR4-S ensures interoperability and dependable performance across compatible Cisco networking platforms. It also supports Digital Diagnostics Monitoring (DDM/DOM), allowing real-time monitoring of operational parameters such as temperature, voltage, and optical power levels.

Designed for flexible deployment, the module is hot-swappable, enabling easy installation and replacement without disrupting network operations. Its combination of high bandwidth, low latency, and carrier-grade reliability makes it suitable for mission-critical networking applications.

Ideal for data center interconnects (DCI), enterprise aggregation layers, service provider backbones, and high-performance computing networks, the Cisco QSFP-100G-LR4-S provides scalable and reliable 100G optical connectivity for modern network infrastructures.