Computer interface, signal read information:
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Shutting, fan noise, Turning on the computer
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Removed, The USB flash drive is inserted
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Disc read, CD / DVD drive
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Floppy disk reading
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Jet printer
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Signal read information, Computer interface
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Input error sound, Pressing a keypad
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Turn on, turn off the hard drive
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Computer simulated laser
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Laser printer
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Turn on, turn off the old computer
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Photocopy (photocopy)
★★★★★