A computer enclosure includes a front panel, a shielding member, and a linkage assembly. The front panel defines an opening and a pair of sliding slots beside the opening. Each of the sliding slots has a stop portion and a sliding portion. The shielding member includes a pair of sliding posts respectively received in the stop portions of the sliding slots. The linkage assembly is capable of pushing the shielding member to urge the sliding posts sliding from the stop portions to the sliding portions of the sliding slots. The shielding member is capable of covering the opening when the sliding posts are received in the stop portions of the sliding slots and capable of sliding along the sliding portions to expose the opening.