Turn on, turn off the hard drive:
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Double click computer mouse
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Turn on, turn off the hard drive
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Input error sound, Pressing a keypad
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Franking machine
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Computer simulated laser
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Repeatedly pressing a computer mouse
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Matrix printer
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Disc read, CD / DVD drive
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Read the, Insert the disk into the drive
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Laser printer
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The USB flash drive is inserted, removed
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Shutting, fan noise, Turning on the laptop
★★★★★