A mounting apparatus includes a first cage (10) and a second cage (20). The first cage includes a plurality of damping members (30). Each of the damping members has a rotatable portion (32). The rotatable portions are rotatable relative to the first cage about rotational axes thereof. The second cage is capable of sliding into the first cage in a sliding direction, and contacting with the rotatable portions of the damping members. The rotational axes of the rotatable portions of the damping members are generally perpendicular to the sliding direction of the second cage.