A chassis includes a base body and a rubber pad. The base body includes a bottom plate and a side plate perpendicular to the bottom plate. A mounting portion is defined in a junction portion of the bottom plate and the side plate. The rubber pad includes a resisting portion and a clamping portion perpendicularly extending from the resisting portion. The rubber pad is detachably received in the mounting portion, with the resisting portion locking with the side plate and the clamping portion engaging with the bottom plate.