Opens, closes the CD / DVD tray, disc read:
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Signals, Computer interface
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Room noise, Hard disk, read, write
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Input error sound, Pressing a keypad
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Alarm, Computer interface
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Office work, environmental sounds, typewriter
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Closing the laptop cover, Opening
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Double click computer mouse
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Computer mouse click
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Matrix printer
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Signal read information, Computer interface
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Floppy disk reading
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Manual copy machine
★★★★★