Laser printer:
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Closes the CD / DVD tray, Opens, disc read
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Bios, Sound signal of a bios computer
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Turn on, turn off the old computer
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Computer keyboard
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Repeatedly pressing a computer mouse
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Computer noise, Communication room
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Closing the laptop cover, Opening
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Franking machine
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Disc read, CD / DVD drive
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Double click computer mouse
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Shutting, Turning on the laptop, fan noise
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Manual copy machine
★★★★★