Modem connection, signal, interference:
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Franking machine
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Computer interface, alarm
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CD / DVD drive, disc read
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Turn on, turn off the hard drive
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Old computer keyboard
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Shutting, Turning on the laptop, fan noise
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Signal read information, Computer interface
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Closes the CD / DVD tray, Opens
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Manual copy machine
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Computer mouse click
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Repeatedly pressing a computer mouse
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Signals, Computer interface
★★★★★