These are electrical conductors, typically insulated wires, that extend from a device or component for connection to a circuit. A common example is the set of colored wires emerging from a power supply, ready to be connected to the motherboard and peripherals of a computer.
Their utility lies in providing a flexible and adaptable interface for making electrical connections. This method simplifies assembly, allows for easy modification or repair, and accommodates variations in circuit design. Historically, these pre-stripped and often terminated wires offered a significant advantage over directly soldering components, reducing the risk of damage during manufacturing and field repairs.