An electronic component assembly and vibration reduction device having screwless design with cantilever clips to clam and locate the electronic panels onto the mounting brackets or fasten the information storage devices onto cases are disclosed. The cantilever clip contain damping structures, which can generate damping effect to reduce vibrations. The effectiveness of the damping structure can be adjusted through the adjustment of the length, thickness, materials and other factors of the cantilever clip. The damping effect is generated by moving the cantilever clips in an oscillatory manner.