Turn on, turn off the old computer:
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Computer interface, signals
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Alarm, Computer interface
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Franking machine
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Computer interface, signal read information
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Opens, closes the CD / DVD tray
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CD / DVD drive, disc read
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Manual copy machine
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Computer mouse click
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Turn off the old monitor, Turn on
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Signal, interference, Modem connection
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Pressing a keypad, input error sound
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General noise, Office work
★★★★★