Opens, closes the CD / DVD tray:
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Photocopy (photocopy)
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Signal read information, Computer interface
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Pressing a keypad, input error sound
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Computer mouse movement
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Computer keyboard
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Franking machine
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Jet printer
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Fan noise, shutting, Turning on the computer
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Fan noise, shutting, Turning on the laptop
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Bios, Sound signal of a bios computer
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Double click computer mouse
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Matrix printer
★★★★★