The cable can be passed through the smaller hole of the two holes on the main unit and the cable can be collected by the larger hole. When passing a cable through a small hole, insert it from the corner. If it is difficult to enter, push the top and bottom of the main unit to pass the cable through the hole. As it can be attached to the cable body, it can be used with the cable attached even when unwound. You can also use only the larger hole to bundle the cables.Available in green.