An electronic device is provided. The electronic device includes a housing that includes a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a side surface surrounding at least a portion of a space between the first surface and the second surface, a first printed circuit board seated inside the housing, a second printed circuit board seated inside the housing, a plurality of cables configured to electrically connect the first printed circuit board and the second printed circuit board, and at least one cable fixing apparatus coupled to the first printed circuit board or the second printed circuit board to accommodate and fix the plurality of cables. In addition, various embodiments identified through the specification are possible.