Patent ID: 6867689

Claim:
A power line communication MODEM including: a MODEM main body portion; a power supply portion that converts an A.C. power source to a D.C. power source and supplies the D.C. power source to said MODEM main body portion through a cable; and an attachment plug that inputs said A.C. power source and a plug socket connected to said attachment plug, each being provided to said power supply portion; wherein said MODEM main body portion and said power supply portion are connected through signal lines, one of a USB connector and an Ethernet connector, each to input/output data, are fitted to said MODEM main body portion and to said power supply portion, respectively, and one of said USB connector and said Ethernet connector fitted to said MODEM main body portion are connected to one of said USB connector and said Ethernet connector fitted to said power source portion through said signal lines.