An object of the invention is to provide a write/read head supporting mechanism for a magnetic disk system or optical disk system having a microactuator for effecting a micro-displacement of a slider, wherein any electrostatic breakdown of an electromagnetic transducer element or an optical module is prevented without detriment to the displacement capability of the microactuator. The write/read head supporting mechanism of the invention comprises a slider 2 provided with an electromagnetic transducer element or an optical module, and a suspension 3. The slider 2 is supported on the suspension 3 by way of a microactuator 4 for displacing the slider 2. A ground region that the suspension 3 has is electrically connected to the slider 2 by way of an electrical connecting member 8 movable and/or deformable in the displacement direction of the slider 2 by the microactuator 4.