LK-8066WM PS/2/USB Computer Wired Multimedia Keyboard LK-8066WM Keyboard dimension (L x W x H): 450 x 180 x 25mm Switch travel distance: 3.5mm Peak force: 45g Operating temperature: 0 to +50 Operating humidity: 20 to 90%RH Key switch life: 10,000,000 times Power consumption: 0. 5W Power supply: +5V Available port: PS/2,USB,U+P combo Eight hot keys: email, media mute, home page, play/pause, volume down, volume up, next track and previous track