An enclosure includes a chassis and a bracket. The chassis includes a bottom panel, a rear panel and a side panel. The rear panel defines a latch hole. Two clamping pieces are located on the side panel. The bracket is engaged between the clamping pieces and includes a first sidewall and a second sidewall. A second hook and a resilient piece are located on the first sidewall. A first hook is located on the second sidewall. The first hook and the second hook are separately engaged with the two clamping pieces for preventing the bracket from moving along a first direction near to the bottom panel. The resilient piece is engaged in the latch hole to preventing the bracket from moving a second direction opposite to the first direction, and the resilient piece is elastically deformable to disengage from the latch hole.