A mounting apparatus for a motherboard includes a chassis and a mounting assembly for securing the motherboard in the chassis. The mounting assembly includes a pivot member pivotally attached to the chassis and a limiting member securely attached to the chassis. The pivot member is rotatable from a released position disengaging from the motherboard to a final position resisting against the motherboard for preventing the motherboard sliding from a secured position to a detachable position. The limiting member includes a resilient arm. A resisting piece extends from the resilient arm and engages with the pivot member to prevent the pivot member rotating from the final position to the released position.