Opens, closes the CD / DVD tray:
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Pressing a keypad, input error sound
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Computer noise, Communication room
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Computer mouse click
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Computer interface, signal read information
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Turn off the old monitor, Turn on
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Signal, Modem connection, interference
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Turn off the old computer, Turn on
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Laser printer
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Closes the CD / DVD tray, Opens, disc read
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Computer interface, alarm
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Photocopy (photocopy)
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Old computer keyboard
★★★★★