Abstract: Disclosed is a peripheral device integrated ubiquitous multifunction PC in which an internet phone device and a PLC modem are integrated. The multifunction PC integrated with a monitor includes a main body including a case provided with basic components and an internet telephone apparatus, and an LCD panel at the front side, and a stand at the lower side of the main body to support the main body. The main body includes a power supply of the case and connected to a power line, a modem provided in the case and including a PLC modem connected to the power supply to modulate/demodulate a signal transmitted through the power line, a telephone receiver provided at a side of the case, and a web-camera provided at the front upper side of the case. The stand includes dial buttons and a key telephone that are provided in the front side thereof.