... 5). Packing Information:Packing list: one unit 42” LCD Advertising Player, two Pieces of keys, English user ... be supported from 1GB to 16GB on the LCD player6). Support software upgrade function via USB port ... transparent tempered glass as protection layer to prevent LCD panel being broken and distorted.2). Full Metal ... .4). Adopts Samsung, LG, AUO brand as LCD Panel, Full New A grade standard.5). Locking ...