Pressing a keypad, input error sound:
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Franking machine
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Signal, interference, Modem connection
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Manual copy machine
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Turn off the hard drive, Turn on
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Alarm, Computer interface
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Photocopy (photocopy)
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Opens, closes the CD / DVD tray, disc read
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Closing the laptop cover, Opening
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Computer mouse movement
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CD / DVD drive, disc read
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Opens, closes the CD / DVD tray
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Turn off the old computer, Turn on
★★★★★