What is an Ethernet switch used for? An Ethernet switch is a type of network hardware that is foundational to networking and the internet. Ethernet switches connect cabled devices, like computers, Wi-Fi access points, PoE lighting and IoT devices, and servers, in an Ethernet LAN so they can communicate with each other and to the internet.

What are the main products of Cisco? Cisco provides IT products and services across five major technology areas: networking (including Ethernet, optical, wireless and mobility), security, collaboration (including voice, video, and data), data center, and the Internet of things.