Turning on the computer, fan noise, shutting down:
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The USB flash drive is inserted, removed
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Laser printer
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Computer mouse click
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General noise, Office work
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Signal, Modem connection, interference
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Old computer keyboard
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Closes the CD / DVD tray, Opens, disc read
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Turning on the laptop, shutting, fan noise
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Double click computer mouse
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Opens, closes the CD / DVD tray
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Opening, closing the laptop cover
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Turn on, turn off the hard drive
★★★★★