Key numbers: 107/108/109/110/112 Language: US/UK/KR/BR/JP Keyboard dimension: 455(L) x162 (W) x20 (H) mm Switch travel distance: 4.5mm Peak force: 55g Operating temperature:0~+50 Operating humidity: 20%~90%RH Key switch life: 10,000,000 times Power consumption:0. 5W Power supply: +5V Available port: PS/2,USB,U+P Combo Packing Info: * inner box size: 465x185x26mm * Carton size: 480x295*x80mm 20pcs/ctn N.W.:13.71kgs G.W.:14.49kgs Container load：10860pcs/20" 23000pcs/40"