Plugboard, also known as patchboard, patch panel or switching matrix, refers to a device used to route electrical signals in a circuit. It is commonly used in electronic systems for routing signals between components or as a custom interface for connecting different devices. An alternative term for plugboard is an interconnect board, which is often used in telecom applications and data centers. Additionally, it can be referred to as a relay switching matrix or a crossbar switch. Regardless of the terminology, the primary function of a plugboard remains the same: to provide a versatile and configurable patching system for electrical signals.