Keyboard dimension: 445(L) x155 (W) x16 (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 or USB Language: Worldwide Languages available 9 Hot Keys : Web, E-Mail, Stop, Play/Pause, Previous, Next, Mute, Volume up, Volume down