A mounting apparatus is provided for fixing a computer case to a liquid crystal display (LCD) monitor. The mounting apparatus includes a supporting bracket attached to a backside of the LCD monitor, and a latch mechanism movably mounted to the supporting bracket. The latch mechanism includes a locking member slidably engaging with the supporting bracket, and a driving member slidably engaging with the supporting bracket. The locking member may slides to a locking position to hold the computer case to the supporting bracket. The driving member is capable of being slid in a direction to push the locking member to an unlocking position, where the computer case is ready for being released from the supporting bracket.