A panel module for a computer enclosure includes a main panel, a linkage member, a cover panel, and a resilient limiting member. The main panel has a cover region and an opening provided in the cover region. The linkage member is connected pivotally to the main and cover panels. The cover panel is movable relative to the main panel to be closed upon or flipped away from the cover region. The linkage member is disposed at a closed position when the cover panel is closed. The limiting member is interposed between the main panel and the linkage member to limit the linkage member to the closed position, and enables the linkage member to be automatically restored to the closed position when the cover panel is to be closed, thereby permitting easy and proper closing of the cover panel.