Pressing a keypad, input error sound:
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Turning on the computer, shutting, fan noise
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Manual copy machine
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Removed, The USB flash drive is inserted
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Turn off the old monitor, Turn on
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Franking machine
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Disc read, CD / DVD drive
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Room noise, read, Hard disk, write
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Jet printer
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Computer interface, alarm
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Signal read information, Computer interface
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Input error sound, Pressing a keypad
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Closes the CD / DVD tray, Opens
★★★★★