A method and combination for mitigating turbulent air flow across an actuator of a data storage device. The control variable computation programs are used by plugging necessary one of them into the process controller main body. The trench has a resistance that varies in response to electromagnetic radiation. The expansion of the hinged top and, or bottom may be used to restore normal balance, tilt and disc height of the vertebrae. Therefore, the mounting portion has higher capability to withstand load than a mounting portion at the front end side of the base frame.