A mounting apparatus includes a latching member, a fastening tab, a fixing member, and a securing member. The fixing member includes a fixing plate, and a resisting plate extending from a first end of the fixing plate. The securing member includes a fixing board, and opposite clamping boards perpendicularly extending from a top and a bottom sides of a first end of the fixing board. A fixing tab extends from a second? end of the fixing board. A second end of the fixing plate is movably mounted to the clamping boards. The fastening tab is fixed to a distal end of the resisting plate, and operably clamped with the fixing tab. The latching member is rotatably mounted to the second end of the fixing plate, away from the resisting plate, and rotated to engage with or disengage from the clamping boards.