This Mid-Box provides AC power for T4 8" and 10" In-Wall Touchscreens when PoE-power cannot be supplied. A blue LED on the mid-box indicates whether the unit is connected to power or not. The mid-box screws into the In-Wall Touchscreen back box, and the T4 Touchscreens are then mounted to the mid-box from the top and are attached and powered magnetically from the mid-box. A security screw can be tightened to prevent the touchscreen from being knocked off the mid-box.