Opens, closes the CD / DVD tray, disc read:
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Office work, typewriter, environmental sounds
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Double click computer mouse
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Shutting, Turning on the laptop, fan noise
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Photocopy (photocopy)
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Computer mouse click
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Modem connection, signal, interference
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Disc read, CD / DVD drive
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The USB flash drive is inserted, removed
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Sound signal of a bios computer, bios
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Old computer keyboard
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Franking machine
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Turn off the hard drive, Turn on
★★★★★