Cisco QSFP-100G-LR4-S-I QSFP28 LC 100G | Single-Mode, Enterprise — QSFP-100G-LR4-S-I-AO

Carry 100 GbE traffic farther without changing the shape of your optical strategy. This QSFP28 LR4 transceiver is built for single-mode fiber links and uses an LC connector, making it a practical fit for backbone, aggregation, and inter-building connectivity where longer reach is required. The LR4 design is the right answer when short-reach optics would force unnecessary topology changes or limit placement flexibility. By pairing 100 GbE throughput with a connector style familiar to enterprise fiber plant standards, it supports clean integration into existing optical infrastructure. For teams standardizing on high-speed uplinks, this module helps preserve port density while extending distance across the network fabric. It is a disciplined choice for environments that need dependable 100 GbE transport, not excess complexity. In procurement terms, it supports the kind of backbone link where the cost of a wrong optic is measured in time, not just hardware. Ideal For Core-to-aggregation uplinks in a 100 GbE network fabric Inter-building backbone links over single-mode fiber High-density switch deployments requiring LC-based optics Standardized spare inventory for enterprise 100 GbE transport Why This Product 1 Long-reach 100 GbE optics for single-mode fiber backbones 2 LC connector fits common enterprise fiber infrastructure 3 QSFP28 form factor preserves switch port density 4 LR4 profile suits core and inter-building links