Which device's primary function is to terminate network cables and connect different devices?

The primary function of a patch panel is to organize and manage network connections by terminating network cables. It serves as a central point where multiple cables can be connected and disconnected easily without directly interacting with the network devices. Patch panels facilitate better cable management and help maintain organized wiring, allowing for simpler troubleshooting and maintenance.

In contrast, a switch operates at the data link layer and is responsible for forwarding data between connected devices within a local area network, but it does not terminate cables. A router, on the other hand, connects different networks and routes data packets between them, using logical addressing to determine the best path. Lastly, a hub is a basic networking device that connects multiple Ethernet devices, but it does not provide the same level of organization or termination as a patch panel would, since it simply broadcasts data to all connected devices without managing connections or ensuring signal integrity.