CD / DVD drive, disc read:
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Closes the CD / DVD tray, Opens
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Hard disk, read, write, room noise
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Turn on, turn off the old computer
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Jet printer
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Input error sound, Pressing a keypad
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Old computer keyboard
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Environmental sounds, typewriter, Office work
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Franking machine
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Modem connection, signal, interference
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Photocopy (photocopy)
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Office work, general noise
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Computer simulated laser
★★★★★