Hard disk, read, write, room noise:
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Old computer keyboard
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Room noise, read, Hard disk, write
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Opens, closes the CD / DVD tray
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Manual copy machine
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Franking machine
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Repeatedly pressing a computer mouse
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Removed, The USB flash drive is inserted
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Matrix printer
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Computer interface, signal read information
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Photocopy (photocopy)
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Signals, Computer interface
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Laser printer
★★★★★