Opening, closing the laptop cover:
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Franking machine
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Sound signal of a bios computer, bios
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Communication room, computer noise
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Computer mouse movement
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Manual copy machine
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Old computer keyboard
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Input error sound, Pressing a keypad
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Closes the CD / DVD tray, Opens, disc read
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The USB flash drive is inserted, removed
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Fan noise, Turning on the computer, shutting
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Computer interface, signal read information
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Alarm, Computer interface
★★★★★