Computer keyboard:
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The USB flash drive is inserted, removed
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General noise, Office work
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Matrix printer
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Pressing a keypad, input error sound
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Franking machine
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Read the, Insert the disk into the drive
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Shutting, Turning on the computer, fan noise
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Repeatedly pressing a computer mouse
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Disc read, CD / DVD drive
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Read, write, room noise, Hard disk
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Communication room, computer noise
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Turn off the old computer, Turn on
★★★★★