The USB flash drive is inserted, removed from the usb connector:
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Disc read, CD / DVD drive
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Photocopy (photocopy)
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Computer keyboard
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Interference, signal, Modem connection
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Computer mouse movement
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Computer noise, Communication room
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Typewriter, environmental sounds, Office work
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Floppy disk reading
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Laser printer
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Manual copy machine
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Computer mouse click
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Turn off the hard drive, Turn on
★★★★★