Turning on the laptop, fan noise, shutting down:
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Computer mouse click
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Pressing a keypad, input error sound
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Signal read information, Computer interface
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The USB flash drive is inserted, removed
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Computer interface, alarm
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Turn off the old computer, Turn on
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Jet printer
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Hard disk, write, read, room noise
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Computer interface, signals
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Double click computer mouse
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Shutting, Turning on the laptop, fan noise
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Laser printer
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