Insert the disk into the drive, read the disk, take it out:
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Computer interface, alarm
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Insert the disk into the drive, read the
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Photocopy (photocopy)
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Repeatedly pressing a computer mouse
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Turn off the hard drive, Turn on
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Manual copy machine
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Laser printer
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Read, write, Hard disk, room noise
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Computer interface, signal read information
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Signal, interference, Modem connection
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Computer keyboard
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Pressing a keypad, input error sound
★★★★★