A method and system providing for customizable jewelry is disclosed. The lumbar support device includes a torso belt for positioning around the user’s mid-section. The remote control device first outputs a wake-up signal to make the individual sensor to enter a setting mode from a sleeping mode; then the remote control device outputs a command signal to the system host through the sensor. The second graphical display depicts a plurality of blade hosts in a smart rack in the plurality of smart racks, so as to mimic a physical arrangement of the plurality of blade hosts. The ground of the printed circuit board and the electromagnetic shielding layer are conducted electrically.