A read module includes: a light source that applies light to an original to read an image; a photoelectric conversion section that converts reflected light from the original into an image signal of the image; and a connector to be electrically connected to a controller connector in a controller. The connector has a plurality of terminals placed side by side in a predetermined direction. The plurality of terminals includes an image signal output terminal section that outputs the image signal to the controller and a power terminal section that inputs electric power for lighting the light source supplied from the controller to the read module. The power terminal section is placed in the proximity of one end of the plurality of terminals in the predetermined direction thereof. The image signal output terminal section is placed in the proximity of an opposite end in the predetermined direction thereof.