Laser printer:
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Computer noise, Communication room
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Read the, Insert the disk into the drive
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The USB flash drive is inserted, removed
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Computer keyboard
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Turning on the laptop, fan noise, shutting
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Opens, closes the CD / DVD tray
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Double click computer mouse
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Interference, Modem connection, signal
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Computer interface, signal read information
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Turn on, turn off the old computer
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Fan noise, shutting, Turning on the computer
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Opening, closing the laptop cover
★★★★★