A hub has a display Printed Circuit Board (PCB) having a contact switch; a display panel positioned above the display PCB and controlled by the display PSB to output content. A window support is positioned over the display panel and has an opening exposing at least a section of display panel. A window formed of a transparent material is positioned over the window support. The window support includes a window support plate defining the opening, the window being positioned on an upper surface of the window support plate; at least one manipulation protrusion extending downward from the window support plate at a position corresponding to the contact switch, the manipulation protrusion operating the contact switch in response to pressure applied to the support plate through the window; and support bosses extending downward from the window support plate and coupled to the partition.