Pressing a keypad, input error sound:
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Opens, closes the CD / DVD tray
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Matrix printer
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Environmental sounds, typewriter, Office work
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Disc read, closes the CD / DVD tray, Opens
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Old computer keyboard
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Floppy disk reading
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Pressing a keypad, input error sound
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Removed, The USB flash drive is inserted
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Turn off the old monitor, Turn on
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Computer interface, alarm
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Turning on the computer, shutting, fan noise
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General noise, Office work
★★★★★