Opens, closes the CD / DVD tray:
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Computer interface, alarm
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Computer simulated laser
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Laser printer
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Signal, interference, Modem connection
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General noise, Office work
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Turning on the computer, fan noise, shutting
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Opening, closing the laptop cover
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Shutting, Turning on the laptop, fan noise
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Bios, Sound signal of a bios computer
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Double click computer mouse
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Old computer keyboard
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Disc read, CD / DVD drive
★★★★★