QSFP-100G-ER4L-S= Cisco 100Gb/s 100GBase-ER4 Single-Mode Fibre 1310nm 40km Duplex LC Connector QSFP Transceiver Module

The Cisco QSFP-100G-ER4L-S transceiver delivers ultra‑reliable, high‑capacity connectivity for modern data‑center and enterprise networks. Engineered for long‑haul single‑mode fiber links, it ensures seamless 100 Gb/s transmission over distances up to 40 km, supporting mission‑critical applications that demand low latency and uncompromised data integrity. Its rugged design and built‑in error‑correction technologies provide consistent performance in demanding environments, while the duplex LC connectors simplify installation and integration with existing infrastructure. Trusted by leading service providers, this module offers a future‑proof solution that scales with growing bandwidth needs, reducing operational costs and maximizing network efficiency.