A computer enclosure includes a base (10), a securing member (30) and a bracket (50). A through hole (164, 184) is defined in the base. The securing member secured to base. A guiding groove (32) is defined in the securing member. The bracket is attached to the base, and has a latching tab (534, 544) and a post (536, 566). During engaging of the latching tab in the through hole of the base, the latching tab presses against an edge of the though hole. The bracket is thereby driven to slide forward on the base, with the post engaging in the guiding groove of the securing member. The bracket is thus secured to the base.