ASUS VE228TLB. Display diagonal: 546.1 mm (21.5 "), Response time: 5 ms, Display brightness: 250 cd/m-square. RMS rated power: 2 W. Cable lock slot: Kensington, VESA mounting interfaces compatibility: 100 x 100 mm. Power consumption (standby): 0.5 W, Power consumption (typical): 35 W. Width (with stand): 512.84 mm, Depth (with stand): 213.93 mm, Height (with stand): 364.07 mm