Cisco QSFP-100G-ER4L-S network transceiver module Fiber optic 100000 Mbit/s

Cisco is the worldwide technology leader that securely connects everything to make anything possible. Our purpose is to power an inclusive future for all by helping our customers reimagine their applications, power hybrid work, secure their enterprise, transform their infrastructure, and meet their sustainability goals.

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We can do good for the world and do good for business when we combine our technology, our people, and our broader networks.

A legacy of innovation
Four decades ago, computers barely communicated with one another. Today, the network connects nearly everything—even satellites, power grids, and phones—forging a universal language of connection that has become our global digital nervous system.