PC Peripheral is a term used to describe any device that can be connected to a personal computer (PC) to enhance its capabilities. The most common PC peripherals are the MOUSE, modem, and faxmodem. A MOUSE is an input device used to control the movement of a cursor on a computer screen. A modem is a device that enables computers to communicate with each other over telephone lines. A faxmodem is a combination of a modem and a fax machine, allowing users to send and receive both digital data and faxes.