Computer mouse click:
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The USB flash drive is inserted, removed
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Alarm, Computer interface
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Turning on the laptop, shutting, fan noise
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Computer simulated laser
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Turn off the old monitor, Turn on
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Opens, disc read, closes the CD / DVD tray
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CD / DVD drive, disc read
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Insert the disk into the drive, read the
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Manual copy machine
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Computer noise, Communication room
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Opens, closes the CD / DVD tray
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Sound signal of a bios computer, bios
★★★★★