An attachment capable of preventing liquid from adhering to a specific electronic component within an electronic device. An electronic substrate has an attachment which can be attached to and detached from the electronic substrate. The attachment has an attachment part detachably attached to an edge of the electronic substrate; and a shield part connected to or integrally formed with the attachment part. The attachment part is a clip-like member having a certain degree of elasticity, and is configured to grip an edge of the electronic substrate so that the attachment is held at a predetermined place. The shield part has an inclined surface, and is configured to shield the electronic component so that liquid, such as a splash or droplet moving toward the electronic component, does not adhere to the component when the attachment is held at the predetermined place.