CD / DVD drive, disc read:
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Office work, general noise
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Old computer keyboard
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Alarm, Computer interface
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Opens, closes the CD / DVD tray
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Computer noise, Communication room
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Repeatedly pressing a computer mouse
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Computer simulated laser
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Shutting, Turning on the computer, fan noise
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Photocopy (photocopy)
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Floppy disk reading
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Closes the CD / DVD tray, Opens, disc read
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The USB flash drive is inserted, removed
★★★★★