A mounting apparatus is configured for fixing an expansion card. The mounting apparatus includes a support fixed to an enclosure, a fastening member, and a latching member pivotably coupled to the fastening member. One end of the fastening member is fixed to the support, and the other end of the fastening member is urged against the expansion card. The latching member includes a first elastic portion configured for pressing the fastening member, and a locking portion extending from the first elastic portion. When the first elastic portion is pressed, the first elastic portion is deformed to press the fastening member to urge against the expansion card, and the latching portion is engaged in the support.