A cluster is a set of connected nodes, usually located close to each other. In computing, a node is a device or point of connection in a network. Clusters are often used to improve performance and/or availability in computer networks. In Jeep vehicles, the term cluster generally refers to the instrument panel cluster (IPC). The IPC houses the vehicle's speedometer, tachometer, fuel gauge, temperature gauge, voltmeter, and oil pressure gauge. It may also include other warning lights and indicators.