Plug and play

[technoguy]

Plug and Play (PnP) is a computer feature that allows the addition of a new device, normally a peripheral, without requiring reconfiguration or manual installation of device drivers. PnP is a process the computer runs through when it is first turned on, involving the boot process and power-on self-test. Therefore, the computer must be turned off before installing a PnP device into an expansion slot. Hot swapping is a similar feature that allows adding and removing devices while the computer is on.