An electronic device includes an HDMI output terminal connectable to one of a first HDMI input terminal and a second HDMI input terminal of an external device, the first and second HDMI input terminals having a first physical address and a second physical address assigned thereto, respectively, a detection means for detecting a connection of the HDMI output terminal to one of the first and second HDMI input terminals, a read means for reading the first physical address from the external device when the connection of the HDMI output terminal to the first HDMI input terminal is detected and reading the second physical address from the external device when the connection of the HDMI output terminal to the second HDMI input terminal is detected, and a transmission means for transmitting one of the read first and second physical addresses to the external device via the HDMI output terminal.