A patch panel is a device used in networking to organize and manage multiple cables. It consists of a series of ports where cables from different sources can be connected. This allows for easy reconfiguration and troubleshooting of network connections without needing to access the main equipment directly. Typically found in data centers and telecommunications rooms, patch panels help streamline the setup of networks. They can connect various devices, such as routers, switches, and servers, making it simpler to maintain and expand network infrastructure as needed.