Turn on, turn off the hard drive:
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Write, read, room noise, Hard disk
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Insert the disk into the drive, read the
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Removed, The USB flash drive is inserted
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Disc read, CD / DVD drive
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Pressing a keypad, input error sound
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Floppy disk reading
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Office work, environmental sounds, typewriter
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Manual copy machine
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Laser printer
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Signal, interference, Modem connection
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Jet printer
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Photocopy (photocopy)
★★★★★