Office work, typewriter, environmental sounds:
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Opens, closes the CD / DVD tray, disc read
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Photocopy (photocopy)
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Pressing a keypad, input error sound
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Turn on, turn off the old computer
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Communication room, computer noise
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Old computer keyboard
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Alarm, Computer interface
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Opening, closing the laptop cover
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Opens, closes the CD / DVD tray
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Jet printer
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Laser printer
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Repeatedly pressing a computer mouse
★★★★★