Next, a configuration for identifying a connection relationship between the power supply portion and the loads will be more specifically described with reference to 
The image processing apparatus 10 according to the present embodiment includes the main body control portion 16 including the fluctuation generating portion 31, the connection identifying portion 32, a device identifying portion 33, a determination portion 34, and an output portion 35. That is, the image processing apparatus 10 includes the device identifying portion 33, the determination portion 34, and the output portion 35 as one of the functions of the main body control portion 16, in addition to the fluctuation generating portion 31 and the connection identifying portion 32. In addition, the image processing apparatus 10 according to the present embodiment includes the detection portion 36 in the expansion control portion 22. That is, the image processing apparatus 10 includes the detection portion 36 as one of the functions of the expansion control portion 22 of the expansion device 2.