CD / DVD drive, disc read:
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Typewriter, environmental sounds, Office work
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Computer noise, Communication room
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Jet printer
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Laser printer
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Turn on, turn off the hard drive
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Opens, closes the CD / DVD tray, disc read
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Computer mouse movement
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Turn off the old computer, Turn on
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Opening, closing the laptop cover
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Alarm, Computer interface
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Write, Hard disk, room noise, read
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Removed, The USB flash drive is inserted
★★★★★