Laser printer:
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Photocopy (photocopy)
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Computer mouse click
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Turning on the laptop, shutting, fan noise
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Old computer keyboard
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Franking machine
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Turn on, turn off the hard drive
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Pressing a keypad, input error sound
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The USB flash drive is inserted, removed
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Alarm, Computer interface
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Laser printer
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Opening, closing the laptop cover
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Computer simulated laser
★★★★★