Patch cables are short electrical cables used to connect different devices within a network. They typically have connectors on both ends, allowing them to link equipment like routers, switches, and computers. These cables come in various types, including Ethernet cables, which are commonly used for wired internet connections. The primary purpose of patch cables is to facilitate communication between devices in a structured cabling system. They help maintain organized connections in data centers and offices, ensuring efficient data transfer and minimizing signal loss. Patch cables are available in different lengths and colors to suit various networking needs.