Computer interface, signal read information:
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General noise, Office work
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The USB flash drive is inserted, removed
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Signal, interference, Modem connection
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Old computer keyboard
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Hard disk, write, read, room noise
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Matrix printer
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Pressing a keypad, input error sound
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Signals, Computer interface
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Turn off the old computer, Turn on
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Opens, closes the CD / DVD tray
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Floppy disk reading
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CD / DVD drive, disc read
★★★★★