Abstract: A component assembly includes a retaining module and a component. The component has a surface and two first engaging portions disposed at the surface. The retaining module includes a pair of engaging arms and a resilient member. Each of the engaging arms has an upright elongate arm body, a second engaging portion disposed at a bottom end of the arm body, and a head portion disposed at a top end of the arm body. The second engaging portions of the engaging arms engage respectively the first engaging portions of the component so as to connect the engaging arms with the component. The engaging arms are adapted to extend through a hole in a connecting member, and are convertible between a locking stat and a release state. The resilient member biases the engaging arms into the locking state.