Patch cords are short cables used to connect different devices within a network. They typically have connectors on both ends, allowing for easy linking of equipment like routers, switches, and computers. Common types of patch cords include Ethernet cables for data transmission and fiber optic cables for high-speed connections. These cords come in various lengths and colors, making it easy to organize and manage cables in a network setup. They are essential for maintaining a reliable connection and ensuring efficient communication between devices in both home and office environments.