Modem connection, signal, interference:
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Computer simulated laser
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Turn off the hard drive, Turn on
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Photocopy (photocopy)
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Computer interface, alarm
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Disc read, CD / DVD drive
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Modem connection, interference, signal
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Pressing a keypad, input error sound
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Double click computer mouse
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Floppy disk reading
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Removed, The USB flash drive is inserted
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Franking machine
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Computer interface, signals
★★★★★