A mounting apparatus includes a bracket, a data storage device and a vibration absorbing module. A slot is defined in the bracket. The data storage device comprises a sidewall with a locking hole. The vibration absorbing module is accommodated in the slot. The vibration absorbing module includes a fixing member and a vibration absorbing member. The fixing member is screwed into the locking hole. The vibration absorbing member is set on the fixing member. The vibration absorbing includes a blocking board and a plurality of buffering pieces. The plurality of buffering pieces is connected to edges of the blocking board and elastically deformability abut edges of the slot.