Insert the disk into the drive, read the disk, take it out:
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Laser printer
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Closing the laptop cover, Opening
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Turning on the laptop, shutting, fan noise
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Computer interface, signals
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Computer keyboard
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Room noise, Hard disk, read, write
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Bios, Sound signal of a bios computer
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Shutting, Turning on the computer, fan noise
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Jet printer
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Computer noise, Communication room
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Manual copy machine
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Computer mouse click
★★★★★